Revert "Completely redo how themes are stored on disk and processed at install

time," as it fails valgrind tests.

This reverts commit 86faccd1028937a69ccc718718fd48c06c0cd471 (r34379).

Review URL: http://codereview.chromium.org/490025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@34385 0039d316-1c4b-4281-b951-d872f2087c98

28 files changed, 1541 insertions, 1757 deletions

diff --git a/chrome/browser/browser_theme_pack.cc b/chrome/browser/browser_theme_pack.cc
deleted file mode 100644
index f30bd6b..0000000
--- a/chrome/browser/browser_theme_pack.cc
+++ /dev/null
@@ -1,864 +0,0 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/browser_theme_pack.h"
-
-#include <climits>
-
-#include "app/gfx/codec/png_codec.h"
-#include "app/gfx/skbitmap_operations.h"
-#include "base/data_pack.h"
-#include "base/logging.h"
-#include "base/stl_util-inl.h"
-#include "base/string_util.h"
-#include "base/values.h"
-#include "chrome/browser/browser_theme_provider.h"
-#include "chrome/browser/chrome_thread.h"
-#include "chrome/browser/theme_resources_util.h"
-#include "chrome/common/extensions/extension.h"
-#include "grit/app_resources.h"
-#include "grit/theme_resources.h"
-#include "net/base/file_stream.h"
-#include "net/base/net_errors.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "third_party/skia/include/core/SkCanvas.h"
-#include "third_party/skia/include/core/SkUnPreMultiply.h"
-
-namespace {
-
-// Version number of the current theme pack. We just throw out and rebuild
-// theme packs that aren't int-equal to this.
-const int kThemePackVersion = 1;
-
-// IDs that are in the DataPack won't clash with the positive integer
-// int32_t. kHeaderID should always have the maximum value because we want the
-// "header" to be written last. That way we can detect whether the pack was
-// successfully written and ignore and regenerate if it was only partially
-// written (i.e. chrome crashed on a different thread while writing the pack).
-const int kHeaderID = UINT_MAX - 1;
-const int kTintsID = UINT_MAX - 2;
-const int kColorsID = UINT_MAX - 3;
-const int kDisplayPropertiesID = UINT_MAX - 4;
-
-// Static size of the tint/color/display property arrays that are mmapped.
-const int kTintArraySize = 6;
-const int kColorArraySize = 19;
-const int kDisplayPropertySize = 3;
-
-// The sum of kFrameBorderThickness and kNonClientRestoredExtraThickness from
-// OpaqueBrowserFrameView.
-const int kRestoredTabVerticalOffset = 15;
-
-
-struct StringToIntTable {
-  const char* key;
-  int id;
-};
-
-// Strings used by themes to identify tints in the JSON.
-StringToIntTable kTintTable[] = {
-  { "buttons", BrowserThemeProvider::TINT_BUTTONS },
-  { "frame", BrowserThemeProvider::TINT_FRAME },
-  { "frame_inactive", BrowserThemeProvider::TINT_FRAME_INACTIVE },
-  { "frame_incognito_inactive",
-    BrowserThemeProvider::TINT_FRAME_INCOGNITO_INACTIVE },
-  { "background_tab", BrowserThemeProvider::TINT_BACKGROUND_TAB },
-  { NULL, 0 }
-};
-
-// Strings used by themes to identify colors in the JSON.
-StringToIntTable kColorTable[] = {
-  { "frame", BrowserThemeProvider::COLOR_FRAME },
-  { "frame_inactive", BrowserThemeProvider::COLOR_FRAME_INACTIVE },
-  { "frame_incognito", BrowserThemeProvider::COLOR_FRAME_INCOGNITO },
-  { "frame_incognito_inactive",
-    BrowserThemeProvider::COLOR_FRAME_INCOGNITO_INACTIVE },
-  { "toolbar", BrowserThemeProvider::COLOR_TOOLBAR },
-  { "tab_text", BrowserThemeProvider::COLOR_TAB_TEXT },
-  { "tab_background_text", BrowserThemeProvider::COLOR_BACKGROUND_TAB_TEXT },
-  { "bookmark_text", BrowserThemeProvider::COLOR_BOOKMARK_TEXT },
-  { "ntp_background", BrowserThemeProvider::COLOR_NTP_BACKGROUND },
-  { "ntp_text", BrowserThemeProvider::COLOR_NTP_TEXT },
-  { "ntp_link", BrowserThemeProvider::COLOR_NTP_LINK },
-  { "ntp_link_underline", BrowserThemeProvider::COLOR_NTP_LINK_UNDERLINE },
-  { "ntp_header", BrowserThemeProvider::COLOR_NTP_HEADER },
-  { "ntp_section", BrowserThemeProvider::COLOR_NTP_SECTION },
-  { "ntp_section_text", BrowserThemeProvider::COLOR_NTP_SECTION_TEXT },
-  { "ntp_section_link", BrowserThemeProvider::COLOR_NTP_SECTION_LINK },
-  { "ntp_section_link_underline",
-    BrowserThemeProvider::COLOR_NTP_SECTION_LINK_UNDERLINE },
-  { "control_background", BrowserThemeProvider::COLOR_CONTROL_BACKGROUND },
-  { "button_background", BrowserThemeProvider::COLOR_BUTTON_BACKGROUND },
-  { NULL, 0 }
-};
-
-// Strings used by themes to identify display properties keys in JSON.
-StringToIntTable kDisplayProperties[] = {
-  { "ntp_background_alignment",
-    BrowserThemeProvider::NTP_BACKGROUND_ALIGNMENT },
-  { "ntp_background_repeat", BrowserThemeProvider::NTP_BACKGROUND_TILING },
-  { "ntp_logo_alternate", BrowserThemeProvider::NTP_LOGO_ALTERNATE },
-  { NULL, 0 }
-};
-
-// Strings used by the tiling values in JSON.
-StringToIntTable kTilingStrings[] = {
-  { "no-repeat", BrowserThemeProvider::NO_REPEAT },
-  { "repeat-x", BrowserThemeProvider::REPEAT_X },
-  { "repeat-y", BrowserThemeProvider::REPEAT_Y },
-  { "repeat", BrowserThemeProvider::REPEAT },
-  { NULL, 0 }
-};
-
-int GetIntForString(const std::string& key, StringToIntTable* table) {
-  for (int i = 0; table[i].key != NULL; ++i) {
-    if (base::strcasecmp(key.c_str(), table[i].key) == 0) {
-      return table[i].id;
-    }
-  }
-
-  return -1;
-}
-
-struct IntToIntTable {
-  int key;
-  int value;
-};
-
-// Mapping used in GenerateFrameImages() to associate frame images with the
-// tint ID that should maybe be applied to it.
-IntToIntTable kFrameTintMap[] = {
-  { IDR_THEME_FRAME, BrowserThemeProvider::TINT_FRAME },
-  { IDR_THEME_FRAME_INACTIVE, BrowserThemeProvider::TINT_FRAME_INACTIVE },
-  { IDR_THEME_FRAME_OVERLAY, BrowserThemeProvider::TINT_FRAME },
-  { IDR_THEME_FRAME_OVERLAY_INACTIVE,
-    BrowserThemeProvider::TINT_FRAME_INACTIVE },
-  { IDR_THEME_FRAME_INCOGNITO, BrowserThemeProvider::TINT_FRAME_INCOGNITO },
-  { IDR_THEME_FRAME_INCOGNITO_INACTIVE,
-    BrowserThemeProvider::TINT_FRAME_INCOGNITO_INACTIVE }
-};
-
-// Mapping used in GenerateTabBackgroundImages() to associate what frame image
-// goes with which tab background.
-IntToIntTable kTabBackgroundMap[] = {
-  { IDR_THEME_TAB_BACKGROUND, IDR_THEME_FRAME },
-  { IDR_THEME_TAB_BACKGROUND_INCOGNITO, IDR_THEME_FRAME_INCOGNITO }
-};
-
-// A list of images that don't need tinting or any other modification and can
-// be byte-copied directly into the finished DataPack. This should contain all
-// themeable image IDs that aren't in kFrameTintMap or kTabBackgroundMap.
-const int kPreloadIDs[] = {
-  IDR_THEME_TOOLBAR,
-  IDR_THEME_NTP_BACKGROUND,
-  IDR_THEME_BUTTON_BACKGROUND,
-  IDR_THEME_NTP_ATTRIBUTION,
-  IDR_THEME_WINDOW_CONTROL_BACKGROUND
-};
-
-// The image resources that will be tinted by the 'button' tint value.
-const int kToolbarButtonIDs[] = {
-  IDR_BACK, IDR_BACK_D, IDR_BACK_H, IDR_BACK_P,
-  IDR_FORWARD, IDR_FORWARD_D, IDR_FORWARD_H, IDR_FORWARD_P,
-  IDR_RELOAD, IDR_RELOAD_H, IDR_RELOAD_P,
-  IDR_HOME, IDR_HOME_H, IDR_HOME_P,
-  IDR_STAR, IDR_STAR_NOBORDER, IDR_STAR_NOBORDER_CENTER, IDR_STAR_D, IDR_STAR_H,
-  IDR_STAR_P,
-  IDR_STARRED, IDR_STARRED_NOBORDER, IDR_STARRED_NOBORDER_CENTER, IDR_STARRED_H,
-  IDR_STARRED_P,
-  IDR_GO, IDR_GO_NOBORDER, IDR_GO_NOBORDER_CENTER, IDR_GO_H, IDR_GO_P,
-  IDR_STOP, IDR_STOP_NOBORDER, IDR_STOP_NOBORDER_CENTER, IDR_STOP_H, IDR_STOP_P,
-  IDR_MENU_BOOKMARK,
-  IDR_MENU_PAGE, IDR_MENU_PAGE_RTL,
-  IDR_MENU_CHROME, IDR_MENU_CHROME_RTL,
-  IDR_MENU_DROPARROW,
-  IDR_THROBBER, IDR_THROBBER_WAITING, IDR_THROBBER_LIGHT,
-  IDR_LOCATIONBG
-};
-
-// Returns a piece of memory with the contents of the file |path|.
-RefCountedMemory* ReadFileData(const FilePath& path) {
-  if (!path.empty()) {
-    net::FileStream file;
-    int flags = base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ;
-    if (file.Open(path, flags) == net::OK) {
-      int64 avail = file.Available();
-      if (avail > 0 && avail < INT_MAX) {
-        size_t size = static_cast<size_t>(avail);
-        std::vector<unsigned char> raw_data;
-        raw_data.resize(size);
-        char* data = reinterpret_cast<char*>(&(raw_data.front()));
-        if (file.ReadUntilComplete(data, size) == avail)
-          return RefCountedBytes::TakeVector(&raw_data);
-      }
-    }
-  }
-
-  return NULL;
-}
-
-// Does error checking for invalid incoming data while trying to read an
-// floaing point value.
-bool ValidRealValue(ListValue* tint_list, int index, double* out) {
-  if (tint_list->GetReal(index, out))
-    return true;
-
-  int value = 0;
-  if (tint_list->GetInteger(index, &value)) {
-    *out = value;
-    return true;
-  }
-
-  return false;
-}
-
-}  // namespace
-
-BrowserThemePack::~BrowserThemePack() {
-  if (!data_pack_.get()) {
-    delete header_;
-    delete [] tints_;
-    delete [] colors_;
-    delete [] display_properties_;
-  }
-
-  STLDeleteValues(&image_cache_);
-}
-
-// static
-BrowserThemePack* BrowserThemePack::BuildFromExtension(Extension* extension) {
-  DCHECK(extension);
-  DCHECK(extension->IsTheme());
-
-  BrowserThemePack* pack = new BrowserThemePack;
-  pack->BuildHeader(extension);
-  pack->BuildTintsFromJSON(extension->GetThemeTints());
-  pack->BuildColorsFromJSON(extension->GetThemeColors());
-  pack->BuildDisplayPropertiesFromJSON(extension->GetThemeDisplayProperties());
-
-  // Builds the images. (Image building is dependent on tints).
-  std::map<int, FilePath> file_paths;
-  pack->ParseImageNamesFromJSON(extension->GetThemeImages(),
-                                extension->path(),
-                                &file_paths);
-
-  pack->LoadRawBitmapsTo(file_paths, &pack->image_cache_);
-
-  pack->GenerateFrameImages(&pack->image_cache_);
-
-#if !defined(OS_MACOSX)
-  // OSX uses its own special buttons that are PDFs that do odd sorts of vector
-  // graphics tricks. Other platforms use bitmaps and we must pre-tint them.
-  pack->GenerateTintedButtons(
-      pack->GetTintInternal(BrowserThemeProvider::TINT_BUTTONS),
-      &pack->image_cache_);
-#endif
-
-  pack->GenerateTabBackgroundImages(&pack->image_cache_);
-
-  // Repack all the images from |image_cache_| into |image_memory_| for
-  // writing to the data pack
-  pack->RepackImageCacheToImageMemory();
-
-  // The BrowserThemePack is now in a consistent state.
-  return pack;
-}
-
-// static
-scoped_refptr<BrowserThemePack> BrowserThemePack::BuildFromDataPack(
-    FilePath path, const std::string& expected_id) {
-  scoped_refptr<BrowserThemePack> pack = new BrowserThemePack;
-  pack->data_pack_.reset(new base::DataPack);
-
-  if (!pack->data_pack_->Load(path)) {
-    LOG(ERROR) << "Failed to load theme data pack.";
-    return NULL;
-  }
-
-  base::StringPiece pointer;
-  if (!pack->data_pack_->GetStringPiece(kHeaderID, &pointer))
-    return NULL;
-  pack->header_ = reinterpret_cast<BrowserThemePackHeader*>(const_cast<char*>(
-      pointer.data()));
-
-  if (pack->header_->version != kThemePackVersion)
-    return NULL;
-  // TODO(erg): Check endianess once DataPack works on the other endian.
-  std::string theme_id(reinterpret_cast<char*>(pack->header_->theme_id),
-                       Extension::kIdSize);
-  std::string truncated_id = expected_id.substr(0, Extension::kIdSize);
-  if (theme_id != truncated_id) {
-    DLOG(ERROR) << "Wrong id: " << theme_id << " vs " << expected_id;
-    return NULL;
-  }
-
-  if (!pack->data_pack_->GetStringPiece(kTintsID, &pointer))
-    return NULL;
-  pack->tints_ = reinterpret_cast<TintEntry*>(const_cast<char*>(
-      pointer.data()));
-
-  if (!pack->data_pack_->GetStringPiece(kColorsID, &pointer))
-    return NULL;
-  pack->colors_ =
-      reinterpret_cast<ColorPair*>(const_cast<char*>(pointer.data()));
-
-  if (!pack->data_pack_->GetStringPiece(kDisplayPropertiesID, &pointer))
-    return NULL;
-  pack->display_properties_ = reinterpret_cast<DisplayPropertyPair*>(
-      const_cast<char*>(pointer.data()));
-
-  return pack;
-}
-
-bool BrowserThemePack::WriteToDisk(FilePath path) const {
-  std::map<uint32, base::StringPiece> resources;
-
-  resources[kHeaderID] = base::StringPiece(
-      reinterpret_cast<const char*>(header_), sizeof(BrowserThemePackHeader));
-  resources[kTintsID] = base::StringPiece(
-      reinterpret_cast<const char*>(tints_), sizeof(TintEntry[kTintArraySize]));
-  resources[kColorsID] = base::StringPiece(
-      reinterpret_cast<const char*>(colors_),
-      sizeof(ColorPair[kColorArraySize]));
-  resources[kDisplayPropertiesID] = base::StringPiece(
-      reinterpret_cast<const char*>(display_properties_),
-      sizeof(DisplayPropertyPair[kDisplayPropertySize]));
-
-  for (RawImages::const_iterator it = image_memory_.begin();
-       it != image_memory_.end(); ++it) {
-    resources[it->first] = base::StringPiece(
-        reinterpret_cast<const char*>(it->second->front()), it->second->size());
-  }
-
-  return base::DataPack::WritePack(path, resources);
-}
-
-bool BrowserThemePack::GetTint(int id, color_utils::HSL* hsl) const {
-  if (tints_) {
-    for (int i = 0; i < kTintArraySize; ++i) {
-      if (tints_[i].id == id) {
-        hsl->h = tints_[i].h;
-        hsl->s = tints_[i].s;
-        hsl->l = tints_[i].l;
-        return true;
-      }
-    }
-  }
-
-  return false;
-}
-
-bool BrowserThemePack::GetColor(int id, SkColor* color) const {
-  if (colors_) {
-    for (int i = 0; i < kColorArraySize; ++i) {
-      if (colors_[i].id == id) {
-        *color = colors_[i].color;
-        return true;
-      }
-    }
-  }
-
-  return false;
-}
-
-bool BrowserThemePack::GetDisplayProperty(int id, int* result) const {
-  if (display_properties_) {
-    for (int i = 0; i < kDisplayPropertySize; ++i) {
-      if (display_properties_[i].id == id) {
-        *result = display_properties_[i].property;
-        return true;
-      }
-    }
-  }
-
-  return false;
-}
-
-SkBitmap* BrowserThemePack::GetBitmapNamed(int id) const {
-  // Check our cache of prepared images, first.
-  ImageCache::const_iterator image_iter = image_cache_.find(id);
-  if (image_iter != image_cache_.end())
-    return image_iter->second;
-
-  scoped_refptr<RefCountedMemory> memory;
-  if (data_pack_.get()) {
-    memory = data_pack_->GetStaticMemory(id);
-  } else {
-    RawImages::const_iterator it = image_memory_.find(id);
-    if (it != image_memory_.end()) {
-      memory = it->second;
-    }
-  }
-
-  if (memory.get()) {
-    // Decode the PNG.
-    SkBitmap bitmap;
-    if (!gfx::PNGCodec::Decode(memory->front(), memory->size(),
-                               &bitmap)) {
-      NOTREACHED() << "Unable to decode theme image resource " << id
-                   << " from saved DataPack.";
-      return NULL;
-    }
-
-    SkBitmap* ret = new SkBitmap(bitmap);
-    image_cache_[id] = ret;
-
-    return ret;
-  }
-
-  return NULL;
-}
-
-RefCountedMemory* BrowserThemePack::GetRawData(int id) const {
-  RefCountedMemory* memory = NULL;
-
-  if (data_pack_.get()) {
-    memory = data_pack_->GetStaticMemory(id);
-  } else {
-    RawImages::const_iterator it = image_memory_.find(id);
-    if (it != image_memory_.end()) {
-      memory = it->second;
-    }
-  }
-
-  return memory;
-}
-
-bool BrowserThemePack::HasCustomImage(int id) const {
-  if (data_pack_.get()) {
-    base::StringPiece ignored;
-    return data_pack_->GetStringPiece(id, &ignored);
-  } else {
-    return image_memory_.count(id) > 0;
-  }
-}
-
-// private:
-
-BrowserThemePack::BrowserThemePack()
-    : header_(NULL),
-      tints_(NULL),
-      colors_(NULL),
-      display_properties_(NULL) {
-}
-
-void BrowserThemePack::BuildHeader(Extension* extension) {
-  header_ = new BrowserThemePackHeader;
-  header_->version = kThemePackVersion;
-
-  // TODO(erg): Need to make this endian safe on other computers. Prerequisite
-  // is that base::DataPack removes this same check.
-#if defined(__BYTE_ORDER)
-  // Linux check
-  COMPILE_ASSERT(__BYTE_ORDER == __LITTLE_ENDIAN,
-                 datapack_assumes_little_endian);
-#elif defined(__BIG_ENDIAN__)
-  // Mac check
-  #error DataPack assumes little endian
-#endif
-  header_->little_endian = 1;
-
-  const std::string& id = extension->id();
-  memcpy(header_->theme_id, id.c_str(), Extension::kIdSize);
-}
-
-void BrowserThemePack::BuildTintsFromJSON(DictionaryValue* tints_value) {
-  tints_ = new TintEntry[kTintArraySize];
-  for (int i = 0; i < kTintArraySize; ++i) {
-    tints_[i].id = -1;
-    tints_[i].h = -1;
-    tints_[i].s = -1;
-    tints_[i].l = -1;
-  }
-
-  // Parse the incoming data from |tints_value| into an intermediary structure.
-  std::map<int, color_utils::HSL> temp_tints;
-  for (DictionaryValue::key_iterator iter(tints_value->begin_keys());
-       iter != tints_value->end_keys(); ++iter) {
-    ListValue* tint_list;
-    if (tints_value->GetList(*iter, &tint_list) &&
-        (tint_list->GetSize() == 3)) {
-      color_utils::HSL hsl = { -1, -1, -1 };
-
-      if (ValidRealValue(tint_list, 0, &hsl.h) &&
-          ValidRealValue(tint_list, 1, &hsl.s) &&
-          ValidRealValue(tint_list, 2, &hsl.l)) {
-
-        int id = GetIntForString(WideToUTF8(*iter), kTintTable);
-        if (id != -1) {
-          temp_tints[id] = hsl;
-        }
-      }
-    }
-  }
-
-  // Copy data from the intermediary data structure to the array.
-  int count = 0;
-  for (std::map<int, color_utils::HSL>::const_iterator it =
-           temp_tints.begin(); it != temp_tints.end() && count < kTintArraySize;
-       ++it, ++count) {
-    tints_[count].id = it->first;
-    tints_[count].h = it->second.h;
-    tints_[count].s = it->second.s;
-    tints_[count].l = it->second.l;
-  }
-}
-
-void BrowserThemePack::BuildColorsFromJSON(DictionaryValue* colors_value) {
-  colors_ = new ColorPair[kColorArraySize];
-  for (int i = 0; i < kColorArraySize; ++i) {
-    colors_[i].id = -1;
-    colors_[i].color = SkColorSetRGB(0, 0, 0);
-  }
-
-  std::map<int, SkColor> temp_colors;
-  ReadColorsFromJSON(colors_value, &temp_colors);
-  GenerateMissingColors(&temp_colors);
-
-  // Copy data from the intermediary data structure to the array.
-  int count = 0;
-  for (std::map<int, SkColor>::const_iterator it = temp_colors.begin();
-       it != temp_colors.end() && count < kColorArraySize; ++it, ++count) {
-    colors_[count].id = it->first;
-    colors_[count].color = it->second;
-  }
-}
-
-void BrowserThemePack::ReadColorsFromJSON(
-    DictionaryValue* colors_value,
-    std::map<int, SkColor>* temp_colors) {
-  // Parse the incoming data from |colors_value| into an intermediary structure.
-  for (DictionaryValue::key_iterator iter(colors_value->begin_keys());
-       iter != colors_value->end_keys(); ++iter) {
-    ListValue* color_list;
-    if (colors_value->GetList(*iter, &color_list) &&
-        ((color_list->GetSize() == 3) || (color_list->GetSize() == 4))) {
-      SkColor color = SK_ColorWHITE;
-      int r, g, b;
-      if (color_list->GetInteger(0, &r) &&
-          color_list->GetInteger(1, &g) &&
-          color_list->GetInteger(2, &b)) {
-        if (color_list->GetSize() == 4) {
-          double alpha;
-          int alpha_int;
-          if (color_list->GetReal(3, &alpha)) {
-            color = SkColorSetARGB(static_cast<int>(alpha * 255), r, g, b);
-          } else if (color_list->GetInteger(3, &alpha_int) &&
-                     (alpha_int == 0 || alpha_int == 1)) {
-            color = SkColorSetARGB(alpha_int ? 255 : 0, r, g, b);
-          } else {
-            // Invalid entry for part 4.
-            continue;
-          }
-        } else {
-          color = SkColorSetRGB(r, g, b);
-        }
-
-        int id = GetIntForString(WideToUTF8(*iter), kColorTable);
-        if (id != -1) {
-          (*temp_colors)[id] = color;
-        }
-      }
-    }
-  }
-}
-
-void BrowserThemePack::GenerateMissingColors(
-    std::map<int, SkColor>* colors) {
-  // Generate link colors, if missing. (See GetColor()).
-  if (!colors->count(BrowserThemeProvider::COLOR_NTP_HEADER) &&
-      colors->count(BrowserThemeProvider::COLOR_NTP_SECTION)) {
-    (*colors)[BrowserThemeProvider::COLOR_NTP_HEADER] =
-        (*colors)[BrowserThemeProvider::COLOR_NTP_SECTION];
-  }
-
-  if (!colors->count(BrowserThemeProvider::COLOR_NTP_SECTION_LINK_UNDERLINE) &&
-      colors->count(BrowserThemeProvider::COLOR_NTP_SECTION_LINK)) {
-    SkColor color_section_link =
-        (*colors)[BrowserThemeProvider::COLOR_NTP_SECTION_LINK];
-    (*colors)[BrowserThemeProvider::COLOR_NTP_SECTION_LINK_UNDERLINE] =
-        SkColorSetA(color_section_link, SkColorGetA(color_section_link) / 3);
-  }
-
-  if (!colors->count(BrowserThemeProvider::COLOR_NTP_LINK_UNDERLINE) &&
-      colors->count(BrowserThemeProvider::COLOR_NTP_LINK)) {
-    SkColor color_link = (*colors)[BrowserThemeProvider::COLOR_NTP_LINK];
-    (*colors)[BrowserThemeProvider::COLOR_NTP_LINK_UNDERLINE] =
-        SkColorSetA(color_link, SkColorGetA(color_link) / 3);
-  }
-
-  // Generate frame colors, if missing. (See GenerateFrameColors()).
-  SkColor frame;
-  std::map<int, SkColor>::const_iterator it =
-      colors->find(BrowserThemeProvider::COLOR_FRAME);
-  if (it != colors->end()) {
-    frame = it->second;
-  } else {
-    frame = BrowserThemeProvider::GetDefaultColor(
-        BrowserThemeProvider::COLOR_FRAME);
-  }
-
-  if (!colors->count(BrowserThemeProvider::COLOR_FRAME)) {
-    (*colors)[BrowserThemeProvider::COLOR_FRAME] =
-        HSLShift(frame, GetTintInternal(BrowserThemeProvider::TINT_FRAME));
-  }
-  if (!colors->count(BrowserThemeProvider::COLOR_FRAME_INACTIVE)) {
-    (*colors)[BrowserThemeProvider::COLOR_FRAME_INACTIVE] =
-        HSLShift(frame, GetTintInternal(
-            BrowserThemeProvider::TINT_FRAME_INACTIVE));
-  }
-  if (!colors->count(BrowserThemeProvider::COLOR_FRAME_INCOGNITO)) {
-    (*colors)[BrowserThemeProvider::COLOR_FRAME_INCOGNITO] =
-        HSLShift(frame, GetTintInternal(
-            BrowserThemeProvider::TINT_FRAME_INCOGNITO));
-  }
-  if (!colors->count(BrowserThemeProvider::COLOR_FRAME_INCOGNITO_INACTIVE)) {
-    (*colors)[BrowserThemeProvider::COLOR_FRAME_INCOGNITO_INACTIVE] =
-        HSLShift(frame, GetTintInternal(
-            BrowserThemeProvider::TINT_FRAME_INCOGNITO_INACTIVE));
-  }
-}
-
-void BrowserThemePack::BuildDisplayPropertiesFromJSON(
-    DictionaryValue* display_properties_value) {
-  display_properties_ = new DisplayPropertyPair[kDisplayPropertySize];
-  for (int i = 0; i < kDisplayPropertySize; ++i) {
-    display_properties_[i].id = -1;
-    display_properties_[i].property = 0;
-  }
-
-  std::map<int, int> temp_properties;
-  for (DictionaryValue::key_iterator iter(
-       display_properties_value->begin_keys());
-       iter != display_properties_value->end_keys(); ++iter) {
-    int property_id = GetIntForString(WideToUTF8(*iter), kDisplayProperties);
-    switch (property_id) {
-      case BrowserThemeProvider::NTP_BACKGROUND_ALIGNMENT: {
-        std::string val;
-        if (display_properties_value->GetString(*iter, &val)) {
-          temp_properties[BrowserThemeProvider::NTP_BACKGROUND_ALIGNMENT] =
-              BrowserThemeProvider::StringToAlignment(val);
-        }
-        break;
-      }
-      case BrowserThemeProvider::NTP_BACKGROUND_TILING: {
-        std::string val;
-        if (display_properties_value->GetString(*iter, &val)) {
-          temp_properties[BrowserThemeProvider::NTP_BACKGROUND_TILING] =
-              GetIntForString(val, kTilingStrings);
-        }
-        break;
-      }
-      case BrowserThemeProvider::NTP_LOGO_ALTERNATE: {
-        int val = 0;
-        if (display_properties_value->GetInteger(*iter, &val))
-          temp_properties[BrowserThemeProvider::NTP_LOGO_ALTERNATE] = val;
-        break;
-      }
-    }
-  }
-
-  // Copy data from the intermediary data structure to the array.
-  int count = 0;
-  for (std::map<int, int>::const_iterator it = temp_properties.begin();
-       it != temp_properties.end() && count < kDisplayPropertySize;
-       ++it, ++count) {
-    display_properties_[count].id = it->first;
-    display_properties_[count].property = it->second;
-  }
-}
-
-void BrowserThemePack::ParseImageNamesFromJSON(
-    DictionaryValue* images_value,
-    FilePath images_path,
-    std::map<int, FilePath>* file_paths) const {
-  for (DictionaryValue::key_iterator iter(images_value->begin_keys());
-       iter != images_value->end_keys(); ++iter) {
-    std::string val;
-    if (images_value->GetString(*iter, &val)) {
-      int id = ThemeResourcesUtil::GetId(WideToUTF8(*iter));
-      if (id != -1)
-        (*file_paths)[id] = images_path.AppendASCII(val);
-    }
-  }
-}
-
-void BrowserThemePack::LoadRawBitmapsTo(
-    const std::map<int, FilePath>& file_paths,
-    ImageCache* raw_bitmaps) {
-  for (std::map<int, FilePath>::const_iterator it = file_paths.begin();
-       it != file_paths.end(); ++it) {
-    scoped_refptr<RefCountedMemory> raw_data(ReadFileData(it->second));
-    int id = it->first;
-
-    // Some images need to go directly into |image_memory_|. No modification is
-    // necessary or desirable.
-    bool is_copyable = false;
-    for (size_t i = 0; i < arraysize(kPreloadIDs); ++i) {
-      if (kPreloadIDs[i] == id) {
-        is_copyable = true;
-        break;
-      }
-    }
-
-    if (is_copyable) {
-      image_memory_[id] = raw_data;
-    } else if (raw_data.get() && raw_data->size()) {
-      // Decode the PNG.
-      SkBitmap bitmap;
-      if (gfx::PNGCodec::Decode(raw_data->front(), raw_data->size(),
-                                &bitmap)) {
-        (*raw_bitmaps)[it->first] = new SkBitmap(bitmap);
-      } else {
-        NOTREACHED() << "Unable to decode theme image resource " << it->first;
-      }
-    }
-  }
-}
-
-void BrowserThemePack::GenerateFrameImages(ImageCache* bitmaps) const {
-  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-
-  // Create all the output bitmaps in a separate cache and move them back into
-  // the input bitmaps because there can be name collisions.
-  ImageCache temp_output;
-
-  for (size_t i = 0; i < arraysize(kFrameTintMap); ++i) {
-    int id = kFrameTintMap[i].key;
-    scoped_ptr<SkBitmap> frame;
-    // If there's no frame image provided for the specified id, then load
-    // the default provided frame. If that's not provided, skip this whole
-    // thing and just use the default images.
-    int base_id;
-
-    if (id == IDR_THEME_FRAME_INCOGNITO_INACTIVE) {
-      base_id = bitmaps->count(IDR_THEME_FRAME_INCOGNITO) ?
-                IDR_THEME_FRAME_INCOGNITO : IDR_THEME_FRAME;
-    } else if (id == IDR_THEME_FRAME_OVERLAY_INACTIVE) {
-      base_id = IDR_THEME_FRAME_OVERLAY;
-    } else if (id == IDR_THEME_FRAME_INACTIVE) {
-      base_id = IDR_THEME_FRAME;
-    } else if (id == IDR_THEME_FRAME_INCOGNITO &&
-               !bitmaps->count(IDR_THEME_FRAME_INCOGNITO)) {
-      base_id = IDR_THEME_FRAME;
-    } else {
-      base_id = id;
-    }
-
-    if (bitmaps->count(id)) {
-      frame.reset(new SkBitmap(*(*bitmaps)[id]));
-    } else if (base_id != id && bitmaps->count(base_id)) {
-      frame.reset(new SkBitmap(*(*bitmaps)[base_id]));
-    } else if (base_id == IDR_THEME_FRAME_OVERLAY &&
-               bitmaps->count(IDR_THEME_FRAME)) {
-      // If there is no theme overlay, don't tint the default frame,
-      // because it will overwrite the custom frame image when we cache and
-      // reload from disk.
-      frame.reset(NULL);
-    } else {
-      // If the theme doesn't specify an image, then apply the tint to
-      // the default frame.
-      frame.reset(new SkBitmap(*rb.GetBitmapNamed(IDR_THEME_FRAME)));
-    }
-
-    if (frame.get()) {
-      temp_output[id] = new SkBitmap(
-          SkBitmapOperations::CreateHSLShiftedBitmap(
-              *frame, GetTintInternal(kFrameTintMap[i].value)));
-    }
-  }
-
-  MergeImageCaches(temp_output, bitmaps);
-}
-
-void BrowserThemePack::GenerateTintedButtons(
-    color_utils::HSL button_tint,
-    ImageCache* processed_bitmaps) const {
-  if (button_tint.h != -1 || button_tint.s != -1 || button_tint.l != -1) {
-    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-    for (size_t i = 0; i < arraysize(kToolbarButtonIDs); ++i) {
-      scoped_ptr<SkBitmap> button(
-          new SkBitmap(*rb.GetBitmapNamed(kToolbarButtonIDs[i])));
-      (*processed_bitmaps)[kToolbarButtonIDs[i]] = new SkBitmap(
-          SkBitmapOperations::CreateHSLShiftedBitmap(*button, button_tint));
-    }
-  }
-}
-
-void BrowserThemePack::GenerateTabBackgroundImages(ImageCache* bitmaps) const {
-  ImageCache temp_output;
-  for (size_t i = 0; i < arraysize(kTabBackgroundMap); ++i) {
-    int id = kTabBackgroundMap[i].key;
-    int base_id = kTabBackgroundMap[i].value;
-
-    // We only need to generate the background tab images if we were provided
-    // with a IDR_THEME_FRAME.
-    ImageCache::const_iterator it = bitmaps->find(base_id);
-    if (it != bitmaps->end()) {
-      SkBitmap bg_tint = SkBitmapOperations::CreateHSLShiftedBitmap(
-          *(it->second), GetTintInternal(
-              BrowserThemeProvider::TINT_BACKGROUND_TAB));
-      int vertical_offset = bitmaps->count(id) ? kRestoredTabVerticalOffset : 0;
-      SkBitmap* bg_tab = new SkBitmap(SkBitmapOperations::CreateTiledBitmap(
-          bg_tint, 0, vertical_offset, bg_tint.width(), bg_tint.height()));
-
-      // If they've provided a custom image, overlay it.
-      ImageCache::const_iterator overlay_it = bitmaps->find(id);
-      if (overlay_it != bitmaps->end()) {
-        SkBitmap* overlay = overlay_it->second;
-        SkCanvas canvas(*bg_tab);
-        for (int x = 0; x < bg_tab->width(); x += overlay->width())
-          canvas.drawBitmap(*overlay, static_cast<SkScalar>(x), 0, NULL);
-      }
-
-      temp_output[id] = bg_tab;
-    }
-  }
-
-  MergeImageCaches(temp_output, bitmaps);
-}
-
-void BrowserThemePack::RepackImageCacheToImageMemory() {
-  // TODO(erg): This shouldn't be done on the main thread. This should be done
-  // during the WriteToDisk() method, but will require some tricky locking.
-  for (ImageCache::const_iterator it = image_cache_.begin();
-       it != image_cache_.end(); ++it) {
-    std::vector<unsigned char> image_data;
-    if (!gfx::PNGCodec::EncodeBGRASkBitmap(*(it->second), false, &image_data)) {
-      NOTREACHED() << "Image file for resource " << it->first
-                   << " could not be encoded.";
-    } else {
-      image_memory_[it->first] = RefCountedBytes::TakeVector(&image_data);
-    }
-  }
-}
-
-void BrowserThemePack::MergeImageCaches(
-    const ImageCache& source, ImageCache* destination) const {
-
-  for (ImageCache::const_iterator it = source.begin(); it != source.end();
-       ++it) {
-    ImageCache::const_iterator bitmap_it = destination->find(it->first);
-    if (bitmap_it != destination->end())
-      delete bitmap_it->second;
-
-    (*destination)[it->first] = it->second;
-  }
-}
-
-color_utils::HSL BrowserThemePack::GetTintInternal(int id) const {
-  if (tints_) {
-    for (int i = 0; i < kTintArraySize; ++i) {
-      if (tints_[i].id == id) {
-        color_utils::HSL hsl;
-        hsl.h = tints_[i].h;
-        hsl.s = tints_[i].s;
-        hsl.l = tints_[i].l;
-        return hsl;
-      }
-    }
-  }
-
-  return BrowserThemeProvider::GetDefaultTint(id);
-}
diff --git a/chrome/browser/browser_theme_pack.h b/chrome/browser/browser_theme_pack.h
deleted file mode 100644
index 4287617..0000000
--- a/chrome/browser/browser_theme_pack.h
+++ /dev/null
@@ -1,191 +0,0 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_BROWSER_THEME_PACK_H_
-#define CHROME_BROWSER_BROWSER_THEME_PACK_H_
-
-#include <map>
-#include <string>
-
-#include "app/gfx/color_utils.h"
-#include "base/basictypes.h"
-#include "base/scoped_ptr.h"
-#include "base/ref_counted.h"
-#include "chrome/common/extensions/extension.h"
-
-class BrowserThemeProviderTest;
-namespace base {
-class DataPack;
-}
-class DictionaryValue;
-class FilePath;
-class RefCountedMemory;
-
-// An optimized representation of a theme, backed by a mmapped DataPack.
-//
-// The idea is to pre-process all images (tinting, compositing, etc) at theme
-// install time, save all the PNG-ified data into an mmappable file so we don't
-// suffer multiple file system access times, therefore solving two of the
-// problems with the previous implementation.
-//
-// A note on const-ness. All public, non-static methods are const.  We do this
-// because once we've constructed a BrowserThemePack through the
-// BuildFromExtension() interface, we WriteToDisk() on a thread other than the
-// UI thread that consumes a BrowserThemePack.
-class BrowserThemePack : public base::RefCountedThreadSafe<BrowserThemePack> {
- public:
-  ~BrowserThemePack();
-
-  // Builds the theme pack from all data from |extension|. This is often done
-  // on a separate thread as it takes so long.
-  static BrowserThemePack* BuildFromExtension(Extension* extension);
-
-  // Builds the theme pack from a previously WriteToDisk(). This operation
-  // should be relatively fast, as it should be an mmap() and some pointer
-  // swizzling. Returns NULL on any error attempting to read |path|.
-  static scoped_refptr<BrowserThemePack> BuildFromDataPack(
-      FilePath path, const std::string& expected_id);
-
-  // Builds a data pack on disk at |path| for future quick loading by
-  // BuildFromDataPack(). Often (but not always) called from the file thread;
-  // implementation should be threadsafe because neither thread will write to
-  // |image_memory_| and the worker thread will keep a reference to prevent
-  // destruction.
-  bool WriteToDisk(FilePath path) const;
-
-  // Returns data from the pack, or the default value if |id| doesn't
-  // exist. These methods should only be called from the UI thread. (But this
-  // isn't enforced because of unit tests).
-  bool GetTint(int id, color_utils::HSL* hsl) const;
-  bool GetColor(int id, SkColor* color) const;
-  bool GetDisplayProperty(int id, int* result) const;
-  SkBitmap* GetBitmapNamed(int id) const;
-  RefCountedMemory* GetRawData(int id) const;
-
-  // Whether this theme provides an image for |id|.
-  bool HasCustomImage(int id) const;
-
- private:
-  friend class BrowserThemePackTest;
-
-  // Cached images. We cache all retrieved and generated bitmaps and keep
-  // track of the pointers. We own these and will delete them when we're done
-  // using them.
-  typedef std::map<int, SkBitmap*> ImageCache;
-
-  // The raw PNG memory associated with a certain id.
-  typedef std::map<int, scoped_refptr<RefCountedMemory> > RawImages;
-
-  // Default. Everything is empty.
-  BrowserThemePack();
-
-  // Builds a header ready to write to disk.
-  void BuildHeader(Extension* extension);
-
-  // Transforms the JSON tint values into their final versions in the |tints_|
-  // array.
-  void BuildTintsFromJSON(DictionaryValue* tints_value);
-
-  // Transforms the JSON color values into their final versions in the
-  // |colors_| array and also fills in unspecified colors based on tint values.
-  void BuildColorsFromJSON(DictionaryValue* color_value);
-
-  // Implementation details of BuildColorsFromJSON().
-  void ReadColorsFromJSON(DictionaryValue* colors_value,
-                          std::map<int, SkColor>* temp_colors);
-  void GenerateMissingColors(std::map<int, SkColor>* temp_colors);
-
-  // Transforms the JSON display properties into |display_properties_|.
-  void BuildDisplayPropertiesFromJSON(DictionaryValue* display_value);
-
-  // Parses the image names out of an extension.
-  void ParseImageNamesFromJSON(DictionaryValue* images_value,
-                               FilePath images_path,
-                               std::map<int, FilePath>* file_paths) const;
-
-  // Loads the unmodified bitmaps packed in the extension to SkBitmaps.
-  void LoadRawBitmapsTo(const std::map<int, FilePath>& file_paths,
-                        ImageCache* raw_bitmaps);
-
-  // Creates tinted and composited frame images. Source and destination is
-  // |bitmaps|.
-  void GenerateFrameImages(ImageCache* bitmaps) const;
-
-  // Generates button images tinted with |button_tint| and places them in
-  // processed_bitmaps.
-  void GenerateTintedButtons(color_utils::HSL button_tint,
-                             ImageCache* processed_bitmaps) const;
-
-  // Generates the semi-transparent tab background images, putting the results
-  // in |bitmaps|. Must be called after GenerateFrameImages().
-  void GenerateTabBackgroundImages(ImageCache* bitmaps) const;
-
-  // Takes all the SkBitmaps in |image_cache_|, encodes them as PNGs and places
-  // them in |image_memory_|.
-  void RepackImageCacheToImageMemory();
-
-  // Takes all images in |source| and puts them in |destination|, freeing any
-  // image already in |destination| that |source| would overwrite.
-  void MergeImageCaches(const ImageCache& source,
-                        ImageCache* destination) const;
-
-  // Retrieves the tint OR the default tint. Unlike the public interface, we
-  // always need to return a reasonable tint here, instead of partially
-  // querying if the tint exists.
-  color_utils::HSL GetTintInternal(int id) const;
-
-  // Data pack, if we have one.
-  scoped_ptr<base::DataPack> data_pack_;
-
-  // All structs written to disk need to be packed; no alignment tricks here,
-  // please.
-#pragma pack(push,1)
-  // Header that is written to disk.
-  struct BrowserThemePackHeader {
-    // Numeric version to make sure we're compatible in the future.
-    int32 version;
-
-    // 1 if little_endian. 0 if big_endian. On mismatch, abort load.
-    int32 little_endian;
-
-    // theme_id without NULL terminator.
-    uint8 theme_id[16];
-  } *header_;
-
-  // The remaining structs represent individual entries in an array. For the
-  // following three structs, BrowserThemePack will either allocate an array or
-  // will point directly to mmapped data.
-  struct TintEntry {
-    int32 id;
-    double h;
-    double s;
-    double l;
-  } *tints_;
-
-  struct ColorPair {
-    int32 id;
-    SkColor color;
-  } *colors_;
-
-  struct DisplayPropertyPair {
-    int32 id;
-    int32 property;
-  } *display_properties_;
-#pragma pack(pop)
-
-  // References to raw PNG data. This map isn't touched when |data_pack_| is
-  // non-NULL; |image_memory_| is only filled during BuildFromExtension(). Any
-  // image data that needs to be written to the DataPack during WriteToDisk()
-  // needs to be in |image_memory_|.
-  RawImages image_memory_;
-
-  // Tinted (or otherwise prepared) images for passing out. BrowserThemePack
-  // owns all these images. This cache isn't touched when we write our data to
-  // a DataPack.
-  mutable ImageCache image_cache_;
-
-  DISALLOW_COPY_AND_ASSIGN(BrowserThemePack);
-};
-
-#endif  // CHROME_BROWSER_BROWSER_THEME_PACK_H_
diff --git a/chrome/browser/browser_theme_pack_unittest.cc b/chrome/browser/browser_theme_pack_unittest.cc
deleted file mode 100644
index 1c9081c..0000000
--- a/chrome/browser/browser_theme_pack_unittest.cc
+++ /dev/null
@@ -1,335 +0,0 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/browser_theme_pack.h"
-
-#include "app/gfx/color_utils.h"
-#include "app/theme_provider.h"
-#include "base/file_util.h"
-#include "base/json/json_reader.h"
-#include "base/path_service.h"
-#include "base/scoped_temp_dir.h"
-#include "base/values.h"
-#include "chrome/browser/theme_resources_util.h"
-#include "chrome/browser/browser_theme_provider.h"
-#include "chrome/common/chrome_paths.h"
-#include "chrome/common/json_value_serializer.h"
-#include "grit/theme_resources.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-class BrowserThemePackTest : public ::testing::Test {
- public:
-  BrowserThemePackTest() : theme_pack_(new BrowserThemePack) { }
-
-  // Transformation for link underline colors.
-  SkColor BuildThirdOpacity(SkColor color_link) {
-    return SkColorSetA(color_link, SkColorGetA(color_link) / 3);
-  }
-
-  void GenerateDefaultFrameColor(std::map<int, SkColor>* colors,
-                                 int color, int tint) {
-    (*colors)[color] = HSLShift(
-        BrowserThemeProvider::GetDefaultColor(
-            BrowserThemeProvider::COLOR_FRAME),
-        BrowserThemeProvider::GetDefaultTint(tint));
-  }
-
-  // Returns a mapping from each COLOR_* constant to the default value for this
-  // constant. Callers get this map, and then modify expected values and then
-  // run the resulting thing through VerifyColorMap().
-  std::map<int, SkColor> GetDefaultColorMap() {
-    std::map<int, SkColor> colors;
-    for (int i = BrowserThemeProvider::COLOR_FRAME;
-         i <= BrowserThemeProvider::COLOR_BUTTON_BACKGROUND; ++i) {
-      colors[i] = BrowserThemeProvider::GetDefaultColor(i);
-    }
-
-    GenerateDefaultFrameColor(&colors, BrowserThemeProvider::COLOR_FRAME,
-                              BrowserThemeProvider::TINT_FRAME);
-    GenerateDefaultFrameColor(&colors,
-                              BrowserThemeProvider::COLOR_FRAME_INACTIVE,
-                              BrowserThemeProvider::TINT_FRAME_INACTIVE);
-    GenerateDefaultFrameColor(&colors,
-                              BrowserThemeProvider::COLOR_FRAME_INCOGNITO,
-                              BrowserThemeProvider::TINT_FRAME_INCOGNITO);
-    GenerateDefaultFrameColor(
-        &colors,
-        BrowserThemeProvider::COLOR_FRAME_INCOGNITO_INACTIVE,
-        BrowserThemeProvider::TINT_FRAME_INCOGNITO_INACTIVE);
-
-    return colors;
-  }
-
-  void VerifyColorMap(const std::map<int, SkColor>& color_map) {
-    for (std::map<int, SkColor>::const_iterator it = color_map.begin();
-         it != color_map.end(); ++it) {
-      SkColor color = BrowserThemeProvider::GetDefaultColor(it->first);
-      theme_pack_->GetColor(it->first, &color);
-      EXPECT_EQ(it->second, color) << "Color id = " << it->first;
-    }
-  }
-
-  void LoadColorJSON(const std::string& json) {
-    scoped_ptr<Value> value(base::JSONReader::Read(json, false));
-    ASSERT_TRUE(value->IsType(Value::TYPE_DICTIONARY));
-    theme_pack_->BuildColorsFromJSON(
-        static_cast<DictionaryValue*>(value.get()));
-  }
-
-  void LoadTintJSON(const std::string& json) {
-    scoped_ptr<Value> value(base::JSONReader::Read(json, false));
-    ASSERT_TRUE(value->IsType(Value::TYPE_DICTIONARY));
-    theme_pack_->BuildTintsFromJSON(
-        static_cast<DictionaryValue*>(value.get()));
-  }
-
-  void LoadDisplayPropertiesJSON(const std::string& json) {
-    scoped_ptr<Value> value(base::JSONReader::Read(json, false));
-    ASSERT_TRUE(value->IsType(Value::TYPE_DICTIONARY));
-    theme_pack_->BuildDisplayPropertiesFromJSON(
-        static_cast<DictionaryValue*>(value.get()));
-  }
-
-  void ParseImageNames(const std::string& json,
-                       std::map<int, FilePath>* out_file_paths) {
-    scoped_ptr<Value> value(base::JSONReader::Read(json, false));
-    ASSERT_TRUE(value->IsType(Value::TYPE_DICTIONARY));
-    theme_pack_->ParseImageNamesFromJSON(
-        static_cast<DictionaryValue*>(value.get()),
-        FilePath(), out_file_paths);
-  }
-
-  FilePath GetStarGazingPath() {
-    FilePath test_path;
-    if (!PathService::Get(chrome::DIR_TEST_DATA, &test_path)) {
-      NOTREACHED();
-      return test_path;
-    }
-
-    test_path = test_path.AppendASCII("profiles");
-    test_path = test_path.AppendASCII("complex_theme");
-    test_path = test_path.AppendASCII("Default");
-    test_path = test_path.AppendASCII("Extensions");
-    test_path = test_path.AppendASCII("mblmlcbknbnfebdfjnolmcapmdofhmme");
-    test_path = test_path.AppendASCII("1.1");
-    return FilePath(test_path);
-  }
-
-  // Verifies the data in star gazing. We do this multiple times for different
-  // BrowserThemePack objects to make sure it works in generated and mmapped
-  // mode correctly.
-  void VerifyStarGazing(BrowserThemePack* pack) {
-    // First check that values we know exist, exist.
-    SkColor color;
-    EXPECT_TRUE(pack->GetColor(BrowserThemeProvider::COLOR_BOOKMARK_TEXT,
-                               &color));
-    EXPECT_EQ(SK_ColorBLACK, color);
-
-    EXPECT_TRUE(pack->GetColor(BrowserThemeProvider::COLOR_NTP_BACKGROUND,
-                               &color));
-    EXPECT_EQ(SkColorSetRGB(57, 137, 194), color);
-
-    color_utils::HSL expected = { 0.6, 0.553, 0.5 };
-    color_utils::HSL actual;
-    EXPECT_TRUE(pack->GetTint(BrowserThemeProvider::TINT_BUTTONS, &actual));
-    EXPECT_DOUBLE_EQ(expected.h, actual.h);
-    EXPECT_DOUBLE_EQ(expected.s, actual.s);
-    EXPECT_DOUBLE_EQ(expected.l, actual.l);
-
-    int val;
-    EXPECT_TRUE(pack->GetDisplayProperty(
-        BrowserThemeProvider::NTP_BACKGROUND_ALIGNMENT, &val));
-    EXPECT_EQ(BrowserThemeProvider::ALIGN_TOP, val);
-
-    EXPECT_TRUE(pack->HasCustomImage(IDR_THEME_FRAME));
-
-    // Make sure we don't have phantom data.
-    EXPECT_FALSE(pack->GetColor(BrowserThemeProvider::COLOR_CONTROL_BACKGROUND,
-                                &color));
-    EXPECT_FALSE(pack->GetTint(BrowserThemeProvider::TINT_FRAME, &actual));
-  }
-
-  scoped_refptr<BrowserThemePack> theme_pack_;
-};
-
-
-TEST_F(BrowserThemePackTest, DeriveUnderlineLinkColor) {
-  // If we specify a link color, but don't specify the underline color, the
-  // theme provider should create one.
-  std::string color_json = "{ \"ntp_link\": [128, 128, 128],"
-                           "  \"ntp_section_link\": [128, 128, 128] }";
-  LoadColorJSON(color_json);
-
-  std::map<int, SkColor> colors = GetDefaultColorMap();
-  SkColor link_color = SkColorSetRGB(128, 128, 128);
-  colors[BrowserThemeProvider::COLOR_NTP_LINK] = link_color;
-  colors[BrowserThemeProvider::COLOR_NTP_LINK_UNDERLINE] =
-      BuildThirdOpacity(link_color);
-  colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK] = link_color;
-  colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK_UNDERLINE] =
-      BuildThirdOpacity(link_color);
-
-  VerifyColorMap(colors);
-}
-
-TEST_F(BrowserThemePackTest, ProvideUnderlineLinkColor) {
-  // If we specify the underline color, it shouldn't try to generate one.x
-  std::string color_json = "{ \"ntp_link\": [128, 128, 128],"
-                           "  \"ntp_link_underline\": [255, 255, 255],"
-                           "  \"ntp_section_link\": [128, 128, 128],"
-                           "  \"ntp_section_link_underline\": [255, 255, 255]"
-                           "}";
-  LoadColorJSON(color_json);
-
-  std::map<int, SkColor> colors = GetDefaultColorMap();
-  SkColor link_color = SkColorSetRGB(128, 128, 128);
-  SkColor underline_color = SkColorSetRGB(255, 255, 255);
-  colors[BrowserThemeProvider::COLOR_NTP_LINK] = link_color;
-  colors[BrowserThemeProvider::COLOR_NTP_LINK_UNDERLINE] = underline_color;
-  colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK] = link_color;
-  colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK_UNDERLINE] =
-      underline_color;
-
-  VerifyColorMap(colors);
-}
-
-TEST_F(BrowserThemePackTest, UseSectionColorAsNTPHeader) {
-  std::string color_json = "{ \"ntp_section\": [190, 190, 190] }";
-  LoadColorJSON(color_json);
-
-  std::map<int, SkColor> colors = GetDefaultColorMap();
-  SkColor ntp_color = SkColorSetRGB(190, 190, 190);
-  colors[BrowserThemeProvider::COLOR_NTP_HEADER] = ntp_color;
-  colors[BrowserThemeProvider::COLOR_NTP_SECTION] = ntp_color;
-  VerifyColorMap(colors);
-}
-
-TEST_F(BrowserThemePackTest, ProvideNtpHeaderColor) {
-  std::string color_json = "{ \"ntp_header\": [120, 120, 120], "
-                           "  \"ntp_section\": [190, 190, 190] }";
-  LoadColorJSON(color_json);
-
-  std::map<int, SkColor> colors = GetDefaultColorMap();
-  SkColor ntp_header = SkColorSetRGB(120, 120, 120);
-  SkColor ntp_section = SkColorSetRGB(190, 190, 190);
-  colors[BrowserThemeProvider::COLOR_NTP_HEADER] = ntp_header;
-  colors[BrowserThemeProvider::COLOR_NTP_SECTION] = ntp_section;
-  VerifyColorMap(colors);
-}
-
-TEST_F(BrowserThemePackTest, CanReadTints) {
-  std::string tint_json = "{ \"buttons\": [ 0.5, 0.5, 0.5 ] }";
-  LoadTintJSON(tint_json);
-
-  color_utils::HSL expected = { 0.5, 0.5, 0.5 };
-  color_utils::HSL actual = { -1, -1, -1 };
-  EXPECT_TRUE(theme_pack_->GetTint(
-      BrowserThemeProvider::TINT_BUTTONS, &actual));
-  EXPECT_DOUBLE_EQ(expected.h, actual.h);
-  EXPECT_DOUBLE_EQ(expected.s, actual.s);
-  EXPECT_DOUBLE_EQ(expected.l, actual.l);
-}
-
-TEST_F(BrowserThemePackTest, CanReadDisplayProperties) {
-  std::string json = "{ \"ntp_background_alignment\": \"bottom\", "
-                     "  \"ntp_background_repeat\": \"repeat-x\", "
-                     "  \"ntp_logo_alternate\": 0 }";
-  LoadDisplayPropertiesJSON(json);
-
-  int out_val;
-  EXPECT_TRUE(theme_pack_->GetDisplayProperty(
-      BrowserThemeProvider::NTP_BACKGROUND_ALIGNMENT, &out_val));
-  EXPECT_EQ(BrowserThemeProvider::ALIGN_BOTTOM, out_val);
-
-  EXPECT_TRUE(theme_pack_->GetDisplayProperty(
-      BrowserThemeProvider::NTP_BACKGROUND_TILING, &out_val));
-  EXPECT_EQ(BrowserThemeProvider::REPEAT_X, out_val);
-
-  EXPECT_TRUE(theme_pack_->GetDisplayProperty(
-      BrowserThemeProvider::NTP_LOGO_ALTERNATE, &out_val));
-  EXPECT_EQ(0, out_val);
-}
-
-TEST_F(BrowserThemePackTest, CanParsePaths) {
-  std::string tint_json = "{ \"theme_button_background\": \"one\", "
-                          "  \"theme_toolbar\": \"two\" }";
-  std::map<int, FilePath> out_file_paths;
-  ParseImageNames(tint_json, &out_file_paths);
-
-  EXPECT_EQ(2u, out_file_paths.size());
-  EXPECT_TRUE(FilePath(FILE_PATH_LITERAL("one")) == out_file_paths[
-      ThemeResourcesUtil::GetId("theme_button_background")]);
-  EXPECT_TRUE(FilePath(FILE_PATH_LITERAL("two")) ==
-            out_file_paths[ThemeResourcesUtil::GetId("theme_toolbar")]);
-}
-
-TEST_F(BrowserThemePackTest, InvalidColors) {
-  std::string invalid_color = "{ \"toolbar\": [\"dog\", \"cat\", [12]], "
-                              "  \"sound\": \"woof\" }";
-  LoadColorJSON(invalid_color);
-  std::map<int, SkColor> colors = GetDefaultColorMap();
-  VerifyColorMap(colors);
-}
-
-TEST_F(BrowserThemePackTest, InvalidTints) {
-  std::string invalid_tints = "{ \"buttons\": [ \"dog\", \"cat\", [\"x\"]], "
-                              "  \"invalid\": \"entry\" }";
-  LoadTintJSON(invalid_tints);
-
-  // We shouldn't have a buttons tint, as it was invalid.
-  color_utils::HSL actual = { -1, -1, -1 };
-  EXPECT_FALSE(theme_pack_->GetTint(BrowserThemeProvider::TINT_BUTTONS,
-                                    &actual));
-}
-
-TEST_F(BrowserThemePackTest, InvalidDisplayProperties) {
-  std::string invalid_properties = "{ \"ntp_background_alignment\": [15], "
-                                   "  \"junk\": [15.3] }";
-  LoadDisplayPropertiesJSON(invalid_properties);
-
-  int out_val;
-  EXPECT_FALSE(theme_pack_->GetDisplayProperty(
-      BrowserThemeProvider::NTP_BACKGROUND_ALIGNMENT, &out_val));
-}
-
-// TODO(erg): This test should actually test more of the built resources from
-// the extension data, but for now, exists so valgrind can test some of the
-// tricky memory stuff that BrowserThemePack does.
-TEST_F(BrowserThemePackTest, CanBuildAndReadPack) {
-  ScopedTempDir dir;
-  ASSERT_TRUE(dir.CreateUniqueTempDir());
-  FilePath file = dir.path().Append(FILE_PATH_LITERAL("data.pak"));
-
-  // Part 1: Build the pack from an extension.
-  {
-    FilePath star_gazing_path = GetStarGazingPath();
-    Extension extension(star_gazing_path);
-
-    FilePath manifest_path =
-        star_gazing_path.AppendASCII("manifest.json");
-    std::string error;
-    JSONFileValueSerializer serializer(manifest_path);
-    scoped_ptr<DictionaryValue> valid_value(
-        static_cast<DictionaryValue*>(serializer.Deserialize(&error)));
-    EXPECT_EQ("", error);
-    ASSERT_TRUE(valid_value.get());
-    ASSERT_TRUE(extension.InitFromValue(*valid_value, true, &error));
-    ASSERT_EQ("", error);
-
-    scoped_refptr<BrowserThemePack> pack =
-        BrowserThemePack::BuildFromExtension(&extension);
-    ASSERT_TRUE(pack.get());
-    ASSERT_TRUE(pack->WriteToDisk(file));
-    VerifyStarGazing(pack.get());
-  }
-
-  // Part 2: Try to read back the data pack that we just wrote to disk.
-  {
-    scoped_refptr<BrowserThemePack> pack =
-        BrowserThemePack::BuildFromDataPack(
-            file, "mblmlcbknbnfebdfjnolmcapmdofhmme");
-    ASSERT_TRUE(pack.get());
-    VerifyStarGazing(pack.get());
-  }
-}
diff --git a/chrome/browser/browser_theme_provider.cc b/chrome/browser/browser_theme_provider.cc
index 5a47772..aceedf1 100644
--- a/chrome/browser/browser_theme_provider.cc
+++ b/chrome/browser/browser_theme_provider.cc
@@ -13,7 +13,6 @@
 #include "base/values.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/browser_theme_pack.h"
 #include "chrome/browser/browser_window.h"
 #include "chrome/browser/extensions/extensions_service.h"
 #include "chrome/browser/metrics/user_metrics.h"
@@ -37,6 +36,50 @@
 #include "app/win_util.h"
 #endif
 
+// Strings used by themes to identify colors for different parts of our UI.
+const char* BrowserThemeProvider::kColorFrame = "frame";
+const char* BrowserThemeProvider::kColorFrameInactive = "frame_inactive";
+const char* BrowserThemeProvider::kColorFrameIncognito = "frame_incognito";
+const char* BrowserThemeProvider::kColorFrameIncognitoInactive =
+    "frame_incognito_inactive";
+const char* BrowserThemeProvider::kColorToolbar = "toolbar";
+const char* BrowserThemeProvider::kColorTabText = "tab_text";
+const char* BrowserThemeProvider::kColorBackgroundTabText =
+    "tab_background_text";
+const char* BrowserThemeProvider::kColorBookmarkText = "bookmark_text";
+const char* BrowserThemeProvider::kColorNTPBackground = "ntp_background";
+const char* BrowserThemeProvider::kColorNTPText = "ntp_text";
+const char* BrowserThemeProvider::kColorNTPLink = "ntp_link";
+const char* BrowserThemeProvider::kColorNTPLinkUnderline = "ntp_link_underline";
+const char* BrowserThemeProvider::kColorNTPHeader = "ntp_header";
+const char* BrowserThemeProvider::kColorNTPSection = "ntp_section";
+const char* BrowserThemeProvider::kColorNTPSectionText = "ntp_section_text";
+const char* BrowserThemeProvider::kColorNTPSectionLink = "ntp_section_link";
+const char* BrowserThemeProvider::kColorNTPSectionLinkUnderline =
+    "ntp_section_link_underline";
+const char* BrowserThemeProvider::kColorControlBackground =
+    "control_background";
+const char* BrowserThemeProvider::kColorButtonBackground = "button_background";
+
+// Strings used by themes to identify tints to apply to different parts of
+// our UI. The frame tints apply to the frame color and produce the
+// COLOR_FRAME* colors.
+const char* BrowserThemeProvider::kTintButtons = "buttons";
+const char* BrowserThemeProvider::kTintFrame = "frame";
+const char* BrowserThemeProvider::kTintFrameInactive = "frame_inactive";
+const char* BrowserThemeProvider::kTintFrameIncognito = "frame_incognito";
+const char* BrowserThemeProvider::kTintFrameIncognitoInactive =
+    "frame_incognito_inactive";
+const char* BrowserThemeProvider::kTintBackgroundTab = "background_tab";
+
+// Strings used by themes to identify miscellaneous numerical properties.
+const char* BrowserThemeProvider::kDisplayPropertyNTPAlignment =
+    "ntp_background_alignment";
+const char* BrowserThemeProvider::kDisplayPropertyNTPTiling =
+    "ntp_background_repeat";
+const char* BrowserThemeProvider::kDisplayPropertyNTPInverseLogo =
+    "ntp_logo_alternate";
+
 // Strings used in alignment properties.
 const char* BrowserThemeProvider::kAlignmentTop = "top";
 const char* BrowserThemeProvider::kAlignmentBottom = "bottom";
@@ -49,52 +92,68 @@ const char* BrowserThemeProvider::kTilingRepeatX = "repeat-x";
 const char* BrowserThemeProvider::kTilingRepeatY = "repeat-y";
 const char* BrowserThemeProvider::kTilingRepeat = "repeat";
 
-// Saved default values.
-const char* BrowserThemeProvider::kDefaultThemeID = "";
-
-namespace {
-
-SkColor TintForUnderline(SkColor input) {
-  return SkColorSetA(input, SkColorGetA(input) / 3);
-}
-
 // Default colors.
-const SkColor kDefaultColorFrame = SkColorSetRGB(77, 139, 217);
-const SkColor kDefaultColorFrameInactive = SkColorSetRGB(152, 188, 233);
-const SkColor kDefaultColorFrameIncognito = SkColorSetRGB(83, 106, 139);
-const SkColor kDefaultColorFrameIncognitoInactive =
+const SkColor BrowserThemeProvider::kDefaultColorFrame =
+    SkColorSetRGB(77, 139, 217);
+const SkColor BrowserThemeProvider::kDefaultColorFrameInactive =
+    SkColorSetRGB(152, 188, 233);
+const SkColor BrowserThemeProvider::kDefaultColorFrameIncognito =
+    SkColorSetRGB(83, 106, 139);
+const SkColor BrowserThemeProvider::kDefaultColorFrameIncognitoInactive =
     SkColorSetRGB(126, 139, 156);
-const SkColor kDefaultColorToolbar = SkColorSetRGB(210, 225, 246);
-const SkColor kDefaultColorTabText = SK_ColorBLACK;
-const SkColor kDefaultColorBackgroundTabText = SkColorSetRGB(64, 64, 64);
-const SkColor kDefaultColorBookmarkText = SkColorSetRGB(18, 50, 114);
+const SkColor BrowserThemeProvider::kDefaultColorToolbar =
+    SkColorSetRGB(210, 225, 246);
+const SkColor BrowserThemeProvider::kDefaultColorTabText = SK_ColorBLACK;
+const SkColor BrowserThemeProvider::kDefaultColorBackgroundTabText =
+    SkColorSetRGB(64, 64, 64);
+const SkColor BrowserThemeProvider::kDefaultColorBookmarkText =
+    SkColorSetRGB(18, 50, 114);
 #if defined(OS_WIN)
-const SkColor kDefaultColorNTPBackground =
+const SkColor BrowserThemeProvider::kDefaultColorNTPBackground =
     color_utils::GetSysSkColor(COLOR_WINDOW);
-const SkColor kDefaultColorNTPText =
+const SkColor BrowserThemeProvider::kDefaultColorNTPText =
     color_utils::GetSysSkColor(COLOR_WINDOWTEXT);
-const SkColor kDefaultColorNTPLink =
+const SkColor BrowserThemeProvider::kDefaultColorNTPLink =
     color_utils::GetSysSkColor(COLOR_HOTLIGHT);
 #else
 // TODO(beng): source from theme provider.
-const SkColor kDefaultColorNTPBackground = SK_ColorWHITE;
-const SkColor kDefaultColorNTPText = SK_ColorBLACK;
-const SkColor kDefaultColorNTPLink = SkColorSetRGB(6, 55, 116);
+const SkColor BrowserThemeProvider::kDefaultColorNTPBackground = SK_ColorWHITE;
+const SkColor BrowserThemeProvider::kDefaultColorNTPText = SK_ColorBLACK;
+const SkColor BrowserThemeProvider::kDefaultColorNTPLink =
+    SkColorSetRGB(6, 55, 116);
 #endif
-const SkColor kDefaultColorNTPHeader = SkColorSetRGB(75, 140, 220);
-const SkColor kDefaultColorNTPSection = SkColorSetRGB(229, 239, 254);
-const SkColor kDefaultColorNTPSectionText = SK_ColorBLACK;
-const SkColor kDefaultColorNTPSectionLink = SkColorSetRGB(6, 55, 116);
-const SkColor kDefaultColorControlBackground = SkColorSetARGB(0, 0, 0, 0);
-const SkColor kDefaultColorButtonBackground = SkColorSetARGB(0, 0, 0, 0);
+const SkColor BrowserThemeProvider::kDefaultColorNTPHeader =
+    SkColorSetRGB(75, 140, 220);
+const SkColor BrowserThemeProvider::kDefaultColorNTPSection =
+    SkColorSetRGB(229, 239, 254);
+const SkColor BrowserThemeProvider::kDefaultColorNTPSectionText = SK_ColorBLACK;
+const SkColor BrowserThemeProvider::kDefaultColorNTPSectionLink =
+    SkColorSetRGB(6, 55, 116);
+const SkColor BrowserThemeProvider::kDefaultColorControlBackground =
+    SkColorSetARGB(0, 0, 0, 0);
+const SkColor BrowserThemeProvider::kDefaultColorButtonBackground =
+    SkColorSetARGB(0, 0, 0, 0);
 
 // Default tints.
-const color_utils::HSL kDefaultTintButtons = { -1, -1, -1 };
-const color_utils::HSL kDefaultTintFrame = { -1, -1, -1 };
-const color_utils::HSL kDefaultTintFrameInactive = { -1, -1, 0.75f };
-const color_utils::HSL kDefaultTintFrameIncognito = { -1, 0.2f, 0.35f };
-const color_utils::HSL kDefaultTintFrameIncognitoInactive = { -1, 0.3f, 0.6f };
-const color_utils::HSL kDefaultTintBackgroundTab = { -1, 0.5, 0.75 };
+const color_utils::HSL BrowserThemeProvider::kDefaultTintButtons =
+    { -1, -1, -1 };
+const color_utils::HSL BrowserThemeProvider::kDefaultTintFrame = { -1, -1, -1 };
+const color_utils::HSL BrowserThemeProvider::kDefaultTintFrameInactive =
+    { -1, -1, 0.75f };
+const color_utils::HSL BrowserThemeProvider::kDefaultTintFrameIncognito =
+    { -1, 0.2f, 0.35f };
+const color_utils::HSL
+    BrowserThemeProvider::kDefaultTintFrameIncognitoInactive =
+    { -1, 0.3f, 0.6f };
+const color_utils::HSL BrowserThemeProvider::kDefaultTintBackgroundTab =
+    { -1, 0.5, 0.75 };
+
+// Saved default values.
+const char* BrowserThemeProvider::kDefaultThemeID = "";
+
+Lock BrowserThemeProvider::themed_image_cache_lock_;
+
+namespace {
 
 // Default display properties.
 const int kDefaultDisplayPropertyNTPAlignment =
@@ -107,6 +166,35 @@ const int kDefaultDisplayPropertyNTPInverseLogo = 0;
 // OpaqueBrowserFrameView.
 const int kRestoredTabVerticalOffset = 15;
 
+// The image resources that will be tinted by the 'button' tint value.
+const int kToolbarButtonIDs[] = {
+  IDR_BACK, IDR_BACK_D, IDR_BACK_H, IDR_BACK_P,
+  IDR_FORWARD, IDR_FORWARD_D, IDR_FORWARD_H, IDR_FORWARD_P,
+  IDR_RELOAD, IDR_RELOAD_H, IDR_RELOAD_P,
+  IDR_HOME, IDR_HOME_H, IDR_HOME_P,
+  IDR_STAR, IDR_STAR_NOBORDER, IDR_STAR_NOBORDER_CENTER, IDR_STAR_D, IDR_STAR_H,
+  IDR_STAR_P,
+  IDR_STARRED, IDR_STARRED_NOBORDER, IDR_STARRED_NOBORDER_CENTER, IDR_STARRED_H,
+  IDR_STARRED_P,
+  IDR_GO, IDR_GO_NOBORDER, IDR_GO_NOBORDER_CENTER, IDR_GO_H, IDR_GO_P,
+  IDR_STOP, IDR_STOP_NOBORDER, IDR_STOP_NOBORDER_CENTER, IDR_STOP_H, IDR_STOP_P,
+  IDR_MENU_BOOKMARK,
+  IDR_MENU_PAGE, IDR_MENU_PAGE_RTL,
+  IDR_MENU_CHROME, IDR_MENU_CHROME_RTL,
+  IDR_MENU_DROPARROW,
+  IDR_THROBBER, IDR_THROBBER_WAITING, IDR_THROBBER_LIGHT,
+  IDR_LOCATIONBG
+};
+
+bool HasButtonImage(int toolbar_button_id) {
+  static std::map<int, bool> button_images;
+  if (button_images.empty()) {
+    for (size_t i = 0; i < arraysize(kToolbarButtonIDs); ++i)
+      button_images[kToolbarButtonIDs[i]] = true;
+  }
+  return button_images.count(toolbar_button_id) > 0;
+}
+
 // The image resources we will allow people to theme.
 const int kThemeableImages[] = {
   IDR_THEME_FRAME,
@@ -134,21 +222,49 @@ bool HasThemeableImage(int themeable_image_id) {
   return themeable_images.count(themeable_image_id) > 0;
 }
 
-// Writes the theme pack to disk on a separate thread.
-class WritePackToDiskTask : public Task {
+
+class WriteImagesToDiskTask : public Task {
  public:
-  WritePackToDiskTask(BrowserThemePack* pack, const FilePath& path)
-      : theme_pack_(pack), pack_path_(path) {}
+  WriteImagesToDiskTask(
+      const BrowserThemeProvider::ImagesDiskCache& images_disk_cache,
+      const BrowserThemeProvider::ImageCache& themed_image_cache) :
+    images_disk_cache_(images_disk_cache),
+    themed_image_cache_(themed_image_cache) {
+  }
 
   virtual void Run() {
-    if (!theme_pack_->WriteToDisk(pack_path_)) {
-      NOTREACHED() << "Could not write theme pack to disk";
+    AutoLock lock(BrowserThemeProvider::themed_image_cache_lock_);
+    for (BrowserThemeProvider::ImagesDiskCache::const_iterator iter(
+         images_disk_cache_.begin()); iter != images_disk_cache_.end();
+         ++iter) {
+      FilePath image_path = iter->first;
+      BrowserThemeProvider::ImageCache::const_iterator themed_iter =
+          themed_image_cache_.find(iter->second);
+      if (themed_iter != themed_image_cache_.end()) {
+        SkBitmap* bitmap = themed_iter->second;
+        std::vector<unsigned char> image_data;
+        if (!gfx::PNGCodec::EncodeBGRASkBitmap(*bitmap, false, &image_data)) {
+          NOTREACHED() << "Image file could not be encoded.";
+          return;
+        }
+        const char* image_data_ptr =
+            reinterpret_cast<const char*>(&image_data[0]);
+        if (!file_util::WriteFile(image_path,
+            image_data_ptr, image_data.size())) {
+          NOTREACHED() << "Image file could not be written to disk.";
+          return;
+        }
+      } else {
+        NOTREACHED() << "Themed image missing from cache.";
+        return;
+      }
     }
   }
 
  private:
-  scoped_refptr<BrowserThemePack> theme_pack_;
-  FilePath pack_path_;
+  // References to data held in the BrowserThemeProvider.
+  const BrowserThemeProvider::ImagesDiskCache& images_disk_cache_;
+  const BrowserThemeProvider::ImageCache& themed_image_cache_;
 };
 
 }  // namespace
@@ -159,13 +275,32 @@ bool BrowserThemeProvider::IsThemeableImage(int resource_id) {
 
 BrowserThemeProvider::BrowserThemeProvider()
     : rb_(ResourceBundle::GetSharedInstance()),
-      profile_(NULL) {
+      profile_(NULL),
+      process_images_(false) {
   // Initialize the themeable image map so we can use it on other threads.
   HasThemeableImage(0);
+  resource_names_[IDR_THEME_FRAME] = "theme_frame";
+  resource_names_[IDR_THEME_FRAME_INACTIVE] = "theme_frame_inactive";
+  resource_names_[IDR_THEME_FRAME_OVERLAY] = "theme_frame_overlay";
+  resource_names_[IDR_THEME_FRAME_OVERLAY_INACTIVE] =
+      "theme_frame_overlay_inactive";
+  resource_names_[IDR_THEME_FRAME_INCOGNITO] = "theme_frame_incognito";
+  resource_names_[IDR_THEME_FRAME_INCOGNITO_INACTIVE] =
+      "theme_frame_incognito_inactive";
+  resource_names_[IDR_THEME_TAB_BACKGROUND] = "theme_tab_background";
+  resource_names_[IDR_THEME_TAB_BACKGROUND_INCOGNITO] =
+      "theme_tab_background_incognito";
+  resource_names_[IDR_THEME_TOOLBAR] = "theme_toolbar";
+  resource_names_[IDR_THEME_TAB_BACKGROUND_V] = "theme_tab_background_v";
+  resource_names_[IDR_THEME_NTP_BACKGROUND] = "theme_ntp_background";
+  resource_names_[IDR_THEME_BUTTON_BACKGROUND] = "theme_button_background";
+  resource_names_[IDR_THEME_NTP_ATTRIBUTION] = "theme_ntp_attribution";
+  resource_names_[IDR_THEME_WINDOW_CONTROL_BACKGROUND] =
+      "theme_window_control_background";
 }
 
 BrowserThemeProvider::~BrowserThemeProvider() {
-  FreePlatformCaches();
+  ClearCaches();
 
   RemoveUnusedThemes();
 }
@@ -174,37 +309,120 @@ void BrowserThemeProvider::Init(Profile* profile) {
   DCHECK(CalledOnValidThread());
   profile_ = profile;
 
+  image_dir_ = profile_->GetPath().Append(chrome::kThemeImagesDirname);
+  if (!file_util::PathExists(image_dir_))
+    file_util::CreateDirectory(image_dir_);
+
   LoadThemePrefs();
 }
 
 SkBitmap* BrowserThemeProvider::GetBitmapNamed(int id) const {
   DCHECK(CalledOnValidThread());
 
-  SkBitmap* bitmap = NULL;
-
-  if (theme_pack_.get())
-    bitmap = theme_pack_->GetBitmapNamed(id);
-
-  if (!bitmap)
-    bitmap = rb_.GetBitmapNamed(id);
+  // First check to see if the Skia image is in the themed cache. The themed
+  // cache is not changed in this method, so it can remain unlocked.
+  ImageCache::const_iterator themed_iter = themed_image_cache_.find(id);
+  if (themed_iter != themed_image_cache_.end())
+    return themed_iter->second;
+
+  // If Skia image is not in themed cache, check regular cache, and possibly
+  // generate and store.
+  ImageCache::const_iterator image_iter = image_cache_.find(id);
+  if (image_iter != image_cache_.end())
+    return image_iter->second;
+
+  scoped_ptr<SkBitmap> result;
+
+  // Try to load the image from the extension.
+  result.reset(LoadThemeBitmap(id));
+
+  // If we still don't have an image, load it from resourcebundle.
+  if (!result.get())
+    result.reset(new SkBitmap(*rb_.GetBitmapNamed(id)));
+
+  if (result.get()) {
+    // If the requested image is part of the toolbar button set, and we have
+    // a provided tint for that set, tint it appropriately.
+    if (HasButtonImage(id) && tints_.count(kTintButtons)) {
+      SkBitmap* tinted =
+          new SkBitmap(TintBitmap(*result.release(), TINT_BUTTONS));
+      result.reset(tinted);
+    }
 
-  return bitmap;
+    // We loaded successfully. Cache the bitmap.
+    image_cache_[id] = result.get();
+    return result.release();
+  } else {
+    NOTREACHED() << "Failed to load a requested image";
+    return NULL;
+  }
 }
 
 SkColor BrowserThemeProvider::GetColor(int id) const {
   DCHECK(CalledOnValidThread());
 
-  SkColor color;
-  if (theme_pack_.get() && theme_pack_->GetColor(id, &color))
-    return color;
+  // Special-case NTP header - if the color isn't provided, we fall back to
+  // the section color.
+  if (id == COLOR_NTP_HEADER) {
+    ColorMap::const_iterator color_iter = colors_.find(kColorNTPHeader);
+    if (color_iter != colors_.end())
+      return color_iter->second;
+    color_iter = colors_.find(kColorNTPSection);
+    return (color_iter == colors_.end()) ?
+        GetDefaultColor(id) : color_iter->second;
+  }
+
+  // Special case the underline colors to use semi transparent in case not
+  // defined.
+  if (id == COLOR_NTP_SECTION_LINK_UNDERLINE) {
+    ColorMap::const_iterator color_iter =
+        colors_.find(kColorNTPSectionLinkUnderline);
+    if (color_iter != colors_.end())
+      return color_iter->second;
+    SkColor color_section_link = GetColor(COLOR_NTP_SECTION_LINK);
+    return SkColorSetA(color_section_link, SkColorGetA(color_section_link) / 3);
+  }
 
-  return GetDefaultColor(id);
+  if (id == COLOR_NTP_LINK_UNDERLINE) {
+    ColorMap::const_iterator color_iter = colors_.find(kColorNTPLinkUnderline);
+    if (color_iter != colors_.end())
+      return color_iter->second;
+    SkColor color_link = GetColor(COLOR_NTP_LINK);
+    return SkColorSetA(color_link, SkColorGetA(color_link) / 3);
+  }
+
+  // TODO(glen): Figure out if we need to tint these.  http://crbug.com/11578
+  ColorMap::const_iterator color_iter = colors_.find(GetColorKey(id));
+  return (color_iter == colors_.end()) ?
+      GetDefaultColor(id) : color_iter->second;
 }
 
 bool BrowserThemeProvider::GetDisplayProperty(int id, int* result) const {
-  if (theme_pack_.get())
-    return theme_pack_->GetDisplayProperty(id, result);
-
+  switch (id) {
+    case NTP_BACKGROUND_ALIGNMENT: {
+      DisplayPropertyMap::const_iterator display_iter =
+          display_properties_.find(kDisplayPropertyNTPAlignment);
+      *result = (display_iter == display_properties_.end()) ?
+          kDefaultDisplayPropertyNTPAlignment : display_iter->second;
+      return true;
+    }
+    case NTP_BACKGROUND_TILING: {
+      DisplayPropertyMap::const_iterator display_iter =
+          display_properties_.find(kDisplayPropertyNTPTiling);
+      *result = (display_iter == display_properties_.end()) ?
+          kDefaultDisplayPropertyNTPTiling : display_iter->second;
+      return true;
+    }
+    case NTP_LOGO_ALTERNATE: {
+      DisplayPropertyMap::const_iterator display_iter =
+          display_properties_.find(kDisplayPropertyNTPInverseLogo);
+      *result = (display_iter == display_properties_.end()) ?
+          kDefaultDisplayPropertyNTPInverseLogo : display_iter->second;
+      return true;
+    }
+    default:
+      NOTREACHED() << "Unknown property requested";
+  }
   return false;
 }
 
@@ -222,10 +440,15 @@ bool BrowserThemeProvider::HasCustomImage(int id) const {
   if (!HasThemeableImage(id))
     return false;
 
-  if (theme_pack_)
-    return theme_pack_->HasCustomImage(id);
-
-  return false;
+  // A custom image = base name is NOT equal to resource name.  See note in
+  // SaveThemeBitmap describing the process by which an original image is
+  // tagged.
+  ImageMap::const_iterator images_iter = images_.find(id);
+  ResourceNameMap::const_iterator names_iter = resource_names_.find(id);
+  if ((images_iter == images_.end()) || (names_iter == resource_names_.end()))
+    return false;
+  return !EndsWith(UTF8ToWide(images_iter->second),
+                   UTF8ToWide(names_iter->second), false);
 }
 
 RefCountedMemory* BrowserThemeProvider::GetRawData(int id) const {
@@ -235,25 +458,57 @@ RefCountedMemory* BrowserThemeProvider::GetRawData(int id) const {
   if (id == IDR_PRODUCT_LOGO && ntp_alternate != 0)
     id = IDR_PRODUCT_LOGO_WHITE;
 
-  RefCountedMemory* data = NULL;
-  if (theme_pack_.get())
-    data = theme_pack_->GetRawData(id);
+  RawDataMap::const_iterator data_iter = raw_data_.find(id);
+  if (data_iter != raw_data_.end())
+    return data_iter->second;
+
+  RefCountedMemory* data = ReadThemeFileData(id);
   if (!data)
     data = rb_.LoadDataResourceBytes(id);
+  if (!data)
+    return NULL;
 
+  raw_data_[id] = data;
   return data;
 }
 
 void BrowserThemeProvider::SetTheme(Extension* extension) {
   // Clear our image cache.
-  FreePlatformCaches();
+  ClearCaches();
 
   DCHECK(extension);
   DCHECK(extension->IsTheme());
+  SetImageData(extension->GetThemeImages(),
+               extension->path());
+  SetColorData(extension->GetThemeColors());
+  SetTintData(extension->GetThemeTints());
+
+  // Drop out to default theme if the theme data is empty.
+  if (images_.empty() && colors_.empty() && tints_.empty()) {
+    UseDefaultTheme();
+    return;
+  }
+
+  SetDisplayPropertyData(extension->GetThemeDisplayProperties());
+  raw_data_.clear();
 
-  BuildFromExtension(extension);
+  SaveImageData(extension->GetThemeImages());
+  SaveColorData();
+  SaveTintData();
+  SaveDisplayPropertyData();
   SaveThemeID(extension->id());
 
+  // Process all images when we first set theme.
+  process_images_ = true;
+
+  GenerateFrameColors();
+  if (ShouldTintFrames()) {
+    AutoLock lock(themed_image_cache_lock_);
+    GenerateFrameImages();
+    GenerateTabImages();
+  }
+
+  WriteImagesToDisk();
   NotifyThemeChanged();
   UserMetrics::RecordAction("Themes_Installed", profile_);
 }
@@ -288,6 +543,36 @@ std::string BrowserThemeProvider::GetThemeID() const {
   return WideToUTF8(id);
 }
 
+RefCountedMemory* BrowserThemeProvider::ReadThemeFileData(int id) const {
+  ImageMap::const_iterator images_iter = images_.find(id);
+  if (images_iter != images_.end()) {
+    // First check to see if we have a registered theme extension and whether
+    // it can handle this resource.
+#if defined(OS_WIN)
+    FilePath path = FilePath(UTF8ToWide(images_iter->second));
+#else
+    FilePath path = FilePath(images_iter->second);
+#endif
+    if (!path.empty()) {
+      net::FileStream file;
+      int flags = base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ;
+      if (file.Open(path, flags) == net::OK) {
+        int64 avail = file.Available();
+        if (avail > 0 && avail < INT_MAX) {
+          size_t size = static_cast<size_t>(avail);
+          std::vector<unsigned char> raw_data;
+          raw_data.resize(size);
+          char* data = reinterpret_cast<char*>(&(raw_data.front()));
+          if (file.ReadUntilComplete(data, size) == avail)
+            return RefCountedBytes::TakeVector(&raw_data);
+        }
+      }
+    }
+  }
+
+  return NULL;
+}
+
 // static
 std::string BrowserThemeProvider::AlignmentToString(int alignment) {
   // Convert from an AlignmentProperty back into a string.
@@ -361,8 +646,313 @@ int BrowserThemeProvider::StringToTiling(const std::string& tiling) {
   return BrowserThemeProvider::NO_REPEAT;
 }
 
-// static
-color_utils::HSL BrowserThemeProvider::GetDefaultTint(int id) {
+void BrowserThemeProvider::SetColor(const char* key, const SkColor& color) {
+  colors_[key] = color;
+}
+
+void BrowserThemeProvider::SetTint(const char* key,
+                                   const color_utils::HSL& tint) {
+  tints_[key] = tint;
+}
+
+color_utils::HSL BrowserThemeProvider::GetTint(int id) const {
+  DCHECK(CalledOnValidThread());
+
+  TintMap::const_iterator tint_iter = tints_.find(GetTintKey(id));
+  return (tint_iter == tints_.end()) ? GetDefaultTint(id) : tint_iter->second;
+}
+
+void BrowserThemeProvider::GenerateFrameColors() {
+  // Generate any secondary frame colors that weren't provided.
+  SkColor frame = GetColor(COLOR_FRAME);
+
+  if (!colors_.count(kColorFrame))
+    colors_[kColorFrame] = HSLShift(frame, GetTint(TINT_FRAME));
+  if (!colors_.count(kColorFrameInactive)) {
+    colors_[kColorFrameInactive] =
+        HSLShift(frame, GetTint(TINT_FRAME_INACTIVE));
+  }
+  if (!colors_.count(kColorFrameIncognito)) {
+    colors_[kColorFrameIncognito] =
+        HSLShift(frame, GetTint(TINT_FRAME_INCOGNITO));
+  }
+  if (!colors_.count(kColorFrameIncognitoInactive)) {
+    colors_[kColorFrameIncognitoInactive] =
+        HSLShift(frame, GetTint(TINT_FRAME_INCOGNITO_INACTIVE));
+  }
+}
+
+void BrowserThemeProvider::GenerateFrameImages() const {
+  // A map of frame image IDs to the tints for those ids.
+  typedef std::map<int, int> FrameTintMap;
+  static FrameTintMap frame_tints;
+  if (frame_tints.empty()) {
+    frame_tints[IDR_THEME_FRAME] = TINT_FRAME;
+    frame_tints[IDR_THEME_FRAME_INACTIVE] = TINT_FRAME_INACTIVE;
+    frame_tints[IDR_THEME_FRAME_OVERLAY] = TINT_FRAME;
+    frame_tints[IDR_THEME_FRAME_OVERLAY_INACTIVE] = TINT_FRAME_INACTIVE;
+    frame_tints[IDR_THEME_FRAME_INCOGNITO] = TINT_FRAME_INCOGNITO;
+    frame_tints[IDR_THEME_FRAME_INCOGNITO_INACTIVE] =
+        TINT_FRAME_INCOGNITO_INACTIVE;
+  }
+
+  for (FrameTintMap::const_iterator iter(frame_tints.begin());
+       iter != frame_tints.end(); ++iter) {
+    int id = iter->first;
+    scoped_ptr<SkBitmap> frame;
+    // If there's no frame image provided for the specified id, then load
+    // the default provided frame. If that's not provided, skip this whole
+    // thing and just use the default images.
+    int base_id;
+    std::string resource_name;
+
+    // If we've already processed the images for this theme, they're all
+    // waiting on disk -- just load them in.
+    if (!process_images_) {
+      frame.reset(LoadThemeBitmap(id));
+      if (frame.get())
+        themed_image_cache_[id] = new SkBitmap(*frame.get());
+    } else {
+      resource_name = resource_names_.find(id)->second;
+      if (id == IDR_THEME_FRAME_INCOGNITO_INACTIVE) {
+        base_id = HasCustomImage(IDR_THEME_FRAME_INCOGNITO) ?
+            IDR_THEME_FRAME_INCOGNITO : IDR_THEME_FRAME;
+      } else if (id == IDR_THEME_FRAME_OVERLAY_INACTIVE) {
+        base_id = IDR_THEME_FRAME_OVERLAY;
+      } else if (id == IDR_THEME_FRAME_INACTIVE) {
+        base_id = IDR_THEME_FRAME;
+      } else if (id == IDR_THEME_FRAME_INCOGNITO &&
+                 !HasCustomImage(IDR_THEME_FRAME_INCOGNITO)) {
+        base_id = IDR_THEME_FRAME;
+      } else {
+        base_id = id;
+      }
+
+      if (HasCustomImage(id)) {
+        frame.reset(LoadThemeBitmap(id));
+      } else if (base_id != id && HasCustomImage(base_id)) {
+        frame.reset(LoadThemeBitmap(base_id));
+      } else if (base_id == IDR_THEME_FRAME_OVERLAY &&
+                 HasCustomImage(IDR_THEME_FRAME)) {
+        // If there is no theme overlay, don't tint the default frame,
+        // because it will overwrite the custom frame image when we cache and
+        // reload from disk.
+        frame.reset(NULL);
+      } else {
+        // If the theme doesn't specify an image, then apply the tint to
+        // the default frame.
+        frame.reset(new SkBitmap(*rb_.GetBitmapNamed(IDR_THEME_FRAME)));
+      }
+
+      if (frame.get()) {
+        SkBitmap* tinted = new SkBitmap(TintBitmap(*frame, iter->second));
+        themed_image_cache_[id] = tinted;
+        SaveThemeBitmap(resource_name, id);
+      }
+    }
+  }
+}
+
+void BrowserThemeProvider::GenerateTabImages() const {
+  GenerateTabBackgroundBitmap(IDR_THEME_TAB_BACKGROUND);
+  GenerateTabBackgroundBitmap(IDR_THEME_TAB_BACKGROUND_INCOGNITO);
+}
+
+void BrowserThemeProvider::ClearAllThemeData() {
+  // Clear our image cache.
+  ClearCaches();
+
+  images_.clear();
+  colors_.clear();
+  tints_.clear();
+  display_properties_.clear();
+  raw_data_.clear();
+
+  SaveImageData(NULL);
+  SaveColorData();
+  SaveTintData();
+  SaveDisplayPropertyData();
+  SaveThemeID(kDefaultThemeID);
+}
+
+void BrowserThemeProvider::LoadThemePrefs() {
+  process_images_ = false;
+  PrefService* prefs = profile_->GetPrefs();
+
+  // TODO(glen): Figure out if any custom prefs were loaded, and if so UMA-log
+  // the fact that a theme was loaded.
+  if (!prefs->HasPrefPath(prefs::kCurrentThemeImages) &&
+      !prefs->HasPrefPath(prefs::kCurrentThemeColors) &&
+      !prefs->HasPrefPath(prefs::kCurrentThemeTints))
+    return;
+
+  // Our prefs already have the extension path baked in, so we don't need to
+  // provide it.
+  SetImageData(prefs->GetMutableDictionary(prefs::kCurrentThemeImages),
+               FilePath());
+  SetColorData(prefs->GetMutableDictionary(prefs::kCurrentThemeColors));
+  SetTintData(prefs->GetMutableDictionary(prefs::kCurrentThemeTints));
+  SetDisplayPropertyData(
+      prefs->GetMutableDictionary(prefs::kCurrentThemeDisplayProperties));
+
+  // If we're not loading the frame from the cached image dir, we are using an
+  // old preferences file, or the processed images were not saved correctly.
+  // Force image reprocessing and caching.
+  ImageMap::const_iterator images_iter = images_.find(IDR_THEME_FRAME);
+  if (images_iter != images_.end()) {
+#if defined(OS_WIN)
+    FilePath cache_path = FilePath(UTF8ToWide(images_iter->second));
+#else
+    FilePath cache_path = FilePath(images_iter->second);
+#endif
+    process_images_ = !file_util::ContainsPath(image_dir_, cache_path);
+  }
+
+  GenerateFrameColors();
+  // Scope for AutoLock on themed_image_cache.
+  {
+    AutoLock lock(themed_image_cache_lock_);
+    GenerateFrameImages();
+    GenerateTabImages();
+  }
+
+  if (process_images_) {
+    WriteImagesToDisk();
+    UserMetrics::RecordAction("Migrated noncached to cached theme.", profile_);
+  }
+  UserMetrics::RecordAction("Themes_loaded", profile_);
+}
+
+void BrowserThemeProvider::NotifyThemeChanged() {
+  // Redraw!
+  NotificationService* service = NotificationService::current();
+  service->Notify(NotificationType::BROWSER_THEME_CHANGED,
+                  Source<BrowserThemeProvider>(this),
+                  NotificationService::NoDetails());
+}
+
+SkBitmap* BrowserThemeProvider::LoadThemeBitmap(int id) const {
+  DCHECK(CalledOnValidThread());
+
+  if (!HasThemeableImage(id))
+    return NULL;
+
+  scoped_refptr<RefCountedMemory> raw_data;
+
+  // We special case images related to the NTP so we first try raw data. Why?
+  // Because the DOMUI stuff uses that interface to return raw PNG data instead
+  // of the normal theme interface which returns SkBitmaps. GetRawData() also
+  // caches the PNG data so it opens new tab pages faster. If we didn't try and
+  // otherwise we would be loading big images twice, once through GetRawData()
+  // and once here. Ouch. So either we prime the GetRawData() cache for when
+  // DOMUIThemeSource requests our image, or we take advantage of the already
+  // loaded data, saving a trip to disk.
+  if (id == IDR_THEME_NTP_BACKGROUND)
+    raw_data = GetRawData(id);
+
+  if (!raw_data)
+    raw_data = ReadThemeFileData(id);
+
+  if (raw_data) {
+    // Decode the PNG.
+    SkBitmap bitmap;
+    if (!gfx::PNGCodec::Decode(raw_data->front(), raw_data->size(),
+                               &bitmap)) {
+      NOTREACHED() << "Unable to decode theme image resource " << id;
+      return NULL;
+    }
+
+    return new SkBitmap(bitmap);
+  } else {
+    // TODO(glen): File no-longer exists, we're out of date. We should
+    // clear the theme (or maybe just the pref that points to this
+    // image).
+    return NULL;
+  }
+}
+
+void BrowserThemeProvider::SaveThemeBitmap(std::string resource_name,
+                                           int id) const {
+  DCHECK(CalledOnValidThread());
+  if (!themed_image_cache_.count(id)) {
+    NOTREACHED();
+    return;
+  }
+
+  // The images_ directory, at this point, contains only the custom images
+  // provided by the extension. We tag these images "_original" in the prefs
+  // file so we can distinguish them from images which have been generated and
+  // saved to disk by the theme caching process (WriteImagesToDisk).  This way,
+  // when we call HasCustomImage, we can check for the "_original" tag to see
+  // whether an image was originally provided by the extension, or saved
+  // in the caching process.
+  if (images_.count(id))
+    resource_name.append("_original");
+
+#if defined(OS_WIN)
+  FilePath image_path = image_dir_.Append(UTF8ToWide(resource_name));
+#elif defined(OS_POSIX)
+  FilePath image_path = image_dir_.Append(resource_name);
+#endif
+
+  images_disk_cache_[image_path] = id;
+}
+
+#if defined(OS_WIN)
+void BrowserThemeProvider::FreePlatformCaches() {
+  // Views (Skia) has no platform image cache to clear.
+}
+#endif
+
+SkBitmap* BrowserThemeProvider::GenerateTabBackgroundBitmapImpl(int id) const {
+  int base_id = (id == IDR_THEME_TAB_BACKGROUND) ?
+      IDR_THEME_FRAME : IDR_THEME_FRAME_INCOGNITO;
+  // According to Miranda, it is safe to read from the themed_image_cache_ here
+  // because we only lock to write on the UI thread, and we only lock to read
+  // on the cache writing thread.
+  ImageCache::const_iterator themed_iter = themed_image_cache_.find(base_id);
+  if (themed_iter == themed_image_cache_.end())
+    return NULL;
+
+  SkBitmap bg_tint = TintBitmap(*(themed_iter->second), TINT_BACKGROUND_TAB);
+  int vertical_offset = HasCustomImage(id) ? kRestoredTabVerticalOffset : 0;
+  SkBitmap* bg_tab = new SkBitmap(SkBitmapOperations::CreateTiledBitmap(
+      bg_tint, 0, vertical_offset, bg_tint.width(), bg_tint.height()));
+
+  // If they've provided a custom image, overlay it.
+  if (HasCustomImage(id)) {
+    SkBitmap* overlay = LoadThemeBitmap(id);
+    if (overlay) {
+      SkCanvas canvas(*bg_tab);
+      for (int x = 0; x < bg_tab->width(); x += overlay->width())
+        canvas.drawBitmap(*overlay, static_cast<SkScalar>(x), 0, NULL);
+    }
+  }
+
+  return bg_tab;
+}
+
+const std::string BrowserThemeProvider::GetTintKey(int id) const {
+  switch (id) {
+    case TINT_FRAME:
+      return kTintFrame;
+    case TINT_FRAME_INACTIVE:
+      return kTintFrameInactive;
+    case TINT_FRAME_INCOGNITO:
+      return kTintFrameIncognito;
+    case TINT_FRAME_INCOGNITO_INACTIVE:
+      return kTintFrameIncognitoInactive;
+    case TINT_BUTTONS:
+      return kTintButtons;
+    case TINT_BACKGROUND_TAB:
+      return kTintBackgroundTab;
+    default:
+      NOTREACHED() << "Unknown tint requested";
+      return "";
+  }
+}
+
+color_utils::HSL BrowserThemeProvider::GetDefaultTint(int id) const {
   switch (id) {
     case TINT_FRAME:
       return kDefaultTintFrame;
@@ -382,8 +972,53 @@ color_utils::HSL BrowserThemeProvider::GetDefaultTint(int id) {
   }
 }
 
-// static
-SkColor BrowserThemeProvider::GetDefaultColor(int id) {
+const std::string BrowserThemeProvider::GetColorKey(int id) const {
+  switch (id) {
+    case COLOR_FRAME:
+      return kColorFrame;
+    case COLOR_FRAME_INACTIVE:
+      return kColorFrameInactive;
+    case COLOR_FRAME_INCOGNITO:
+      return kColorFrameIncognito;
+    case COLOR_FRAME_INCOGNITO_INACTIVE:
+      return kColorFrameIncognitoInactive;
+    case COLOR_TOOLBAR:
+      return kColorToolbar;
+    case COLOR_TAB_TEXT:
+      return kColorTabText;
+    case COLOR_BACKGROUND_TAB_TEXT:
+      return kColorBackgroundTabText;
+    case COLOR_BOOKMARK_TEXT:
+      return kColorBookmarkText;
+    case COLOR_NTP_BACKGROUND:
+      return kColorNTPBackground;
+    case COLOR_NTP_TEXT:
+      return kColorNTPText;
+    case COLOR_NTP_LINK:
+      return kColorNTPLink;
+    case COLOR_NTP_LINK_UNDERLINE:
+      return kColorNTPLinkUnderline;
+    case COLOR_NTP_HEADER:
+      return kColorNTPHeader;
+    case COLOR_NTP_SECTION:
+      return kColorNTPSection;
+    case COLOR_NTP_SECTION_TEXT:
+      return kColorNTPSectionText;
+    case COLOR_NTP_SECTION_LINK:
+      return kColorNTPSectionLink;
+    case COLOR_NTP_SECTION_LINK_UNDERLINE:
+      return kColorNTPSectionLinkUnderline;
+    case COLOR_CONTROL_BACKGROUND:
+      return kColorControlBackground;
+    case COLOR_BUTTON_BACKGROUND:
+      return kColorButtonBackground;
+    default:
+      NOTREACHED() << "Unknown color requested";
+      return "";
+  }
+}
+
+SkColor BrowserThemeProvider::GetDefaultColor(int id) const {
   switch (id) {
     case COLOR_FRAME:
       return kDefaultColorFrame;
@@ -407,8 +1042,6 @@ SkColor BrowserThemeProvider::GetDefaultColor(int id) {
       return kDefaultColorNTPText;
     case COLOR_NTP_LINK:
       return kDefaultColorNTPLink;
-    case COLOR_NTP_LINK_UNDERLINE:
-      return TintForUnderline(kDefaultColorNTPLink);
     case COLOR_NTP_HEADER:
       return kDefaultColorNTPHeader;
     case COLOR_NTP_SECTION:
@@ -417,8 +1050,6 @@ SkColor BrowserThemeProvider::GetDefaultColor(int id) {
       return kDefaultColorNTPSectionText;
     case COLOR_NTP_SECTION_LINK:
       return kDefaultColorNTPSectionLink;
-    case COLOR_NTP_SECTION_LINK_UNDERLINE:
-      return TintForUnderline(kDefaultColorNTPSectionLink);
     case COLOR_CONTROL_BACKGROUND:
       return kDefaultColorControlBackground;
     case COLOR_BUTTON_BACKGROUND:
@@ -429,97 +1060,289 @@ SkColor BrowserThemeProvider::GetDefaultColor(int id) {
   }
 }
 
-color_utils::HSL BrowserThemeProvider::GetTint(int id) const {
-  DCHECK(CalledOnValidThread());
+SkBitmap BrowserThemeProvider::TintBitmap(const SkBitmap& bitmap,
+                                          int hsl_id) const {
+  return SkBitmapOperations::CreateHSLShiftedBitmap(bitmap, GetTint(hsl_id));
+}
+
+void BrowserThemeProvider::SetImageData(DictionaryValue* images_value,
+                                        FilePath images_path) {
+  images_.clear();
 
-  color_utils::HSL hsl;
-  if (theme_pack_.get() && theme_pack_->GetTint(id, &hsl))
-    return hsl;
+  if (!images_value)
+    return;
 
-  return GetDefaultTint(id);
+  for (DictionaryValue::key_iterator iter(images_value->begin_keys());
+       iter != images_value->end_keys(); ++iter) {
+    std::string val;
+    if (images_value->GetStringWithoutPathExpansion(*iter, &val)) {
+      int id = ThemeResourcesUtil::GetId(WideToUTF8(*iter));
+      if (id != -1) {
+        if (!images_path.empty()) {
+          images_[id] =
+              WideToUTF8(images_path.AppendASCII(val).ToWStringHack());
+          resource_names_[id] = WideToASCII(*iter);
+        } else {
+          images_[id] = val;
+        }
+      }
+    }
+  }
 }
 
-void BrowserThemeProvider::ClearAllThemeData() {
-  // Clear our image cache.
-  FreePlatformCaches();
-  theme_pack_ = NULL;
+void BrowserThemeProvider::SetColorData(DictionaryValue* colors_value) {
+  colors_.clear();
 
-  profile_->GetPrefs()->ClearPref(prefs::kCurrentThemePackFilename);
-  SaveThemeID(kDefaultThemeID);
+  if (!colors_value)
+    return;
+
+  for (DictionaryValue::key_iterator iter(colors_value->begin_keys());
+       iter != colors_value->end_keys(); ++iter) {
+    ListValue* color_list;
+    if (colors_value->GetListWithoutPathExpansion(*iter, &color_list) &&
+        ((color_list->GetSize() == 3) || (color_list->GetSize() == 4))) {
+      int r, g, b;
+      color_list->GetInteger(0, &r);
+      color_list->GetInteger(1, &g);
+      color_list->GetInteger(2, &b);
+      if (color_list->GetSize() == 4) {
+        double alpha;
+        int alpha_int;
+        if (color_list->GetReal(3, &alpha)) {
+          colors_[WideToUTF8(*iter)] =
+              SkColorSetARGB(static_cast<int>(alpha * 255), r, g, b);
+        } else if (color_list->GetInteger(3, &alpha_int) &&
+                   (alpha_int == 0 || alpha_int == 1)) {
+          colors_[WideToUTF8(*iter)] =
+              SkColorSetARGB(alpha_int ? 255 : 0, r, g, b);
+        }
+      } else {
+        colors_[WideToUTF8(*iter)] = SkColorSetRGB(r, g, b);
+      }
+    }
+  }
 }
 
-void BrowserThemeProvider::LoadThemePrefs() {
-  PrefService* prefs = profile_->GetPrefs();
+void BrowserThemeProvider::SetTintData(DictionaryValue* tints_value) {
+  tints_.clear();
 
-  std::string current_id = GetThemeID();
-  if (current_id != kDefaultThemeID) {
-    bool loaded_pack = false;
+  if (!tints_value)
+    return;
 
-    // If we don't have a file pack, we're updating from an old version.
-    FilePath path = prefs->GetFilePath(prefs::kCurrentThemePackFilename);
-    if (path != FilePath()) {
-      theme_pack_ = BrowserThemePack::BuildFromDataPack(path, current_id);
-      loaded_pack = theme_pack_.get() != NULL;
+  for (DictionaryValue::key_iterator iter(tints_value->begin_keys());
+       iter != tints_value->end_keys(); ++iter) {
+    ListValue* tint_list;
+    if (tints_value->GetListWithoutPathExpansion(*iter, &tint_list) &&
+        (tint_list->GetSize() == 3)) {
+      color_utils::HSL hsl = { -1, -1, -1 };
+      int value = 0;
+      if (!tint_list->GetReal(0, &hsl.h) && tint_list->GetInteger(0, &value))
+        hsl.h = value;
+      if (!tint_list->GetReal(1, &hsl.s) &&  tint_list->GetInteger(1, &value))
+        hsl.s = value;
+      if (!tint_list->GetReal(2, &hsl.l) && tint_list->GetInteger(2, &value))
+        hsl.l = value;
+
+      tints_[WideToUTF8(*iter)] = hsl;
     }
+  }
+}
 
-    if (loaded_pack) {
-      UserMetrics::RecordAction("Themes.Loaded", profile_);
+void BrowserThemeProvider::SetDisplayPropertyData(
+    DictionaryValue* display_properties_value) {
+  display_properties_.clear();
+
+  if (!display_properties_value)
+    return;
+
+  for (DictionaryValue::key_iterator iter(
+       display_properties_value->begin_keys());
+       iter != display_properties_value->end_keys(); ++iter) {
+    // New tab page alignment and background tiling.
+    if (base::strcasecmp(WideToUTF8(*iter).c_str(),
+                         kDisplayPropertyNTPAlignment) == 0) {
+      std::string val;
+      if (display_properties_value->GetStringWithoutPathExpansion(*iter,
+                                                                  &val)) {
+        display_properties_[kDisplayPropertyNTPAlignment] =
+            StringToAlignment(val);
+      }
+    } else if (base::strcasecmp(WideToUTF8(*iter).c_str(),
+                                kDisplayPropertyNTPTiling) == 0) {
+      std::string val;
+      if (display_properties_value->GetStringWithoutPathExpansion(*iter, &val))
+        display_properties_[kDisplayPropertyNTPTiling] = StringToTiling(val);
+    }
+    if (base::strcasecmp(WideToUTF8(*iter).c_str(),
+                         kDisplayPropertyNTPInverseLogo) == 0) {
+      int val = 0;
+      if (display_properties_value->GetIntegerWithoutPathExpansion(*iter, &val))
+        display_properties_[kDisplayPropertyNTPInverseLogo] = val;
+    }
+  }
+}
+
+SkBitmap* BrowserThemeProvider::GenerateTabBackgroundBitmap(int id) const {
+  if (id == IDR_THEME_TAB_BACKGROUND ||
+      id == IDR_THEME_TAB_BACKGROUND_INCOGNITO) {
+    // The requested image is a background tab. Get a frame to create the
+    // tab against. As themes don't use the glass frame, we don't have to
+    // worry about compositing them together, as our default theme provides
+    // the necessary bitmaps.
+    if (!process_images_) {
+      scoped_ptr<SkBitmap> frame;
+      frame.reset(LoadThemeBitmap(id));
+      if (frame.get())
+        themed_image_cache_[id] = new SkBitmap(*frame.get());
     } else {
-      // TODO(erg): We need to pop up a dialog informing the user that their
-      // theme is being migrated.
-      ExtensionsService* service = profile_->GetExtensionsService();
-      if (service) {
-        Extension* extension = service->GetExtensionById(current_id, false);
-        if (extension) {
-          DLOG(ERROR) << "Migrating theme";
-          BuildFromExtension(extension);
-          UserMetrics::RecordAction("Themes.Migrated", profile_);
-        } else {
-          DLOG(ERROR) << "Theme is mysteriously gone.";
-          ClearAllThemeData();
-          UserMetrics::RecordAction("Themes.Gone", profile_);
-        }
+      SkBitmap* bg_tab = GenerateTabBackgroundBitmapImpl(id);
+
+      if (bg_tab) {
+        std::string resource_name((id == IDR_THEME_TAB_BACKGROUND) ?
+            "theme_tab_background" : "theme_tab_background_incognito");
+        themed_image_cache_[id] = bg_tab;
+        SaveThemeBitmap(resource_name, id);
+        return bg_tab;
       }
     }
   }
+  return NULL;
 }
 
-void BrowserThemeProvider::NotifyThemeChanged() {
-  // Redraw!
-  NotificationService* service = NotificationService::current();
-  service->Notify(NotificationType::BROWSER_THEME_CHANGED,
-                  Source<BrowserThemeProvider>(this),
-                  NotificationService::NoDetails());
+void BrowserThemeProvider::SaveImageData(DictionaryValue* images_value) const {
+  // Save our images data.
+  DictionaryValue* pref_images =
+      profile_->GetPrefs()->GetMutableDictionary(prefs::kCurrentThemeImages);
+  pref_images->Clear();
+
+  if (!images_value)
+    return;
+
+  for (DictionaryValue::key_iterator iter(images_value->begin_keys());
+       iter != images_value->end_keys(); ++iter) {
+    std::string val;
+    if (images_value->GetStringWithoutPathExpansion(*iter, &val)) {
+      int id = ThemeResourcesUtil::GetId(WideToUTF8(*iter));
+      if (id != -1) {
+        pref_images->SetWithoutPathExpansion(*iter,
+            Value::CreateStringValue(images_.find(id)->second));
+      }
+    }
+  }
 }
 
-#if defined(OS_WIN)
-void BrowserThemeProvider::FreePlatformCaches() {
-  // Views (Skia) has no platform image cache to clear.
+void BrowserThemeProvider::SaveColorData() const {
+  // Save our color data.
+  DictionaryValue* pref_colors =
+      profile_->GetPrefs()->GetMutableDictionary(prefs::kCurrentThemeColors);
+  pref_colors->Clear();
+
+  if (colors_.empty())
+    return;
+
+  for (ColorMap::const_iterator iter(colors_.begin()); iter != colors_.end();
+       ++iter) {
+    SkColor rgba = iter->second;
+    ListValue* rgb_list = new ListValue();
+    rgb_list->Set(0, Value::CreateIntegerValue(SkColorGetR(rgba)));
+    rgb_list->Set(1, Value::CreateIntegerValue(SkColorGetG(rgba)));
+    rgb_list->Set(2, Value::CreateIntegerValue(SkColorGetB(rgba)));
+    if (SkColorGetA(rgba) != 255)
+      rgb_list->Set(3, Value::CreateRealValue(SkColorGetA(rgba) / 255.0));
+    pref_colors->Set(UTF8ToWide(iter->first), rgb_list);
+  }
 }
-#endif
 
-void BrowserThemeProvider::SavePackName(const FilePath& pack_path) {
-  profile_->GetPrefs()->SetFilePath(
-      prefs::kCurrentThemePackFilename, pack_path);
+void BrowserThemeProvider::SaveTintData() const {
+  // Save our tint data.
+  DictionaryValue* pref_tints =
+      profile_->GetPrefs()->GetMutableDictionary(prefs::kCurrentThemeTints);
+  pref_tints->Clear();
+
+  if (tints_.empty())
+    return;
+
+  for (TintMap::const_iterator iter(tints_.begin()); iter != tints_.end();
+       ++iter) {
+    color_utils::HSL hsl = iter->second;
+    ListValue* hsl_list = new ListValue();
+    hsl_list->Set(0, Value::CreateRealValue(hsl.h));
+    hsl_list->Set(1, Value::CreateRealValue(hsl.s));
+    hsl_list->Set(2, Value::CreateRealValue(hsl.l));
+    pref_tints->Set(UTF8ToWide(iter->first), hsl_list);
+  }
+}
+
+void BrowserThemeProvider::SaveDisplayPropertyData() const {
+  // Save our display property data.
+  DictionaryValue* pref_display_properties =
+      profile_->GetPrefs()->
+          GetMutableDictionary(prefs::kCurrentThemeDisplayProperties);
+  pref_display_properties->Clear();
+
+  if (display_properties_.empty())
+    return;
+
+  for (DisplayPropertyMap::const_iterator iter(display_properties_.begin());
+       iter != display_properties_.end(); ++iter) {
+    if (base::strcasecmp(iter->first.c_str(),
+                         kDisplayPropertyNTPAlignment) == 0) {
+      pref_display_properties->SetString(UTF8ToWide(iter->first),
+                                         AlignmentToString(iter->second));
+    } else if (base::strcasecmp(iter->first.c_str(),
+                                kDisplayPropertyNTPTiling) == 0) {
+      pref_display_properties->SetString(UTF8ToWide(iter->first),
+                                         TilingToString(iter->second));
+    }
+    if (base::strcasecmp(iter->first.c_str(),
+                         kDisplayPropertyNTPInverseLogo) == 0) {
+      pref_display_properties->SetInteger(UTF8ToWide(iter->first),
+                                          iter->second);
+    }
+  }
+}
+
+void BrowserThemeProvider::SaveCachedImageData() const {
+  DictionaryValue* pref_images =
+      profile_->GetPrefs()->GetMutableDictionary(prefs::kCurrentThemeImages);
+
+  for (ImagesDiskCache::const_iterator it(images_disk_cache_.begin());
+       it != images_disk_cache_.end(); ++it) {
+    std::wstring disk_path = it->first.ToWStringHack();
+    std::string pref_name = resource_names_.find(it->second)->second;
+    pref_images->SetString(UTF8ToWide(pref_name), WideToUTF8(disk_path));
+  }
+  profile_->GetPrefs()->ScheduleSavePersistentPrefs();
 }
 
 void BrowserThemeProvider::SaveThemeID(const std::string& id) {
   profile_->GetPrefs()->SetString(prefs::kCurrentThemeID, UTF8ToWide(id));
 }
 
-void BrowserThemeProvider::BuildFromExtension(Extension* extension) {
-  scoped_refptr<BrowserThemePack> pack =
-      BrowserThemePack::BuildFromExtension(extension);
-  if (!pack.get()) {
-    NOTREACHED() << "Could not load theme.";
-    return;
+void BrowserThemeProvider::ClearCaches() {
+  FreePlatformCaches();
+  STLDeleteValues(&image_cache_);
+
+  // Scope for AutoLock on themed_image_cache.
+  {
+    AutoLock lock(themed_image_cache_lock_);
+    STLDeleteValues(&themed_image_cache_);
   }
 
-  // Write the packed file to disk.
-  FilePath pack_path = extension->path().Append(chrome::kThemePackFilename);
-  ChromeThread::PostTask(ChromeThread::IO, FROM_HERE,
-                         new WritePackToDiskTask(pack, pack_path));
+  images_disk_cache_.clear();
+}
+
+void BrowserThemeProvider::WriteImagesToDisk() const {
+  g_browser_process->file_thread()->message_loop()->PostTask(FROM_HERE,
+      new WriteImagesToDiskTask(images_disk_cache_, themed_image_cache_));
+  SaveCachedImageData();
+}
 
-  SavePackName(pack_path);
-  theme_pack_ = pack;
+bool BrowserThemeProvider::ShouldTintFrames() const {
+  return (HasCustomImage(IDR_THEME_FRAME) ||
+      tints_.count(GetTintKey(TINT_BACKGROUND_TAB)) ||
+      tints_.count(GetTintKey(TINT_FRAME)) ||
+      tints_.count(GetTintKey(TINT_FRAME_INACTIVE)) ||
+      tints_.count(GetTintKey(TINT_FRAME_INCOGNITO)) ||
+      tints_.count(GetTintKey(TINT_FRAME_INCOGNITO_INACTIVE)));
 }
diff --git a/chrome/browser/browser_theme_provider.h b/chrome/browser/browser_theme_provider.h
index a06d7ee..04117b4 100644
--- a/chrome/browser/browser_theme_provider.h
+++ b/chrome/browser/browser_theme_provider.h
@@ -22,13 +22,48 @@ class Profile;
 class DictionaryValue;
 class PrefService;
 class BrowserThemeProviderTest;
-class BrowserThemePack;
 
 class BrowserThemeProvider : public NonThreadSafe,
                              public ThemeProvider {
  public:
   // Public constants used in BrowserThemeProvider and its subclasses:
 
+  // Strings used by themes to identify colors for different parts of our UI.
+  static const char* kColorFrame;
+  static const char* kColorFrameInactive;
+  static const char* kColorFrameIncognito;
+  static const char* kColorFrameIncognitoInactive;
+  static const char* kColorToolbar;
+  static const char* kColorTabText;
+  static const char* kColorBackgroundTabText;
+  static const char* kColorBookmarkText;
+  static const char* kColorNTPBackground;
+  static const char* kColorNTPText;
+  static const char* kColorNTPLink;
+  static const char* kColorNTPLinkUnderline;
+  static const char* kColorNTPHeader;
+  static const char* kColorNTPSection;
+  static const char* kColorNTPSectionText;
+  static const char* kColorNTPSectionLink;
+  static const char* kColorNTPSectionLinkUnderline;
+  static const char* kColorControlBackground;
+  static const char* kColorButtonBackground;
+
+  // Strings used by themes to identify tints to apply to different parts of
+  // our UI. The frame tints apply to the frame color and produce the
+  // COLOR_FRAME* colors.
+  static const char* kTintButtons;
+  static const char* kTintFrame;
+  static const char* kTintFrameInactive;
+  static const char* kTintFrameIncognito;
+  static const char* kTintFrameIncognitoInactive;
+  static const char* kTintBackgroundTab;
+
+  // Strings used by themes to identify miscellaneous numerical properties.
+  static const char* kDisplayPropertyNTPAlignment;
+  static const char* kDisplayPropertyNTPTiling;
+  static const char* kDisplayPropertyNTPInverseLogo;
+
   // Strings used in alignment properties.
   static const char* kAlignmentTop;
   static const char* kAlignmentBottom;
@@ -41,11 +76,38 @@ class BrowserThemeProvider : public NonThreadSafe,
   static const char* kTilingRepeatY;
   static const char* kTilingRepeat;
 
+  // Default colors.
+  static const SkColor kDefaultColorFrame;
+  static const SkColor kDefaultColorFrameInactive;
+  static const SkColor kDefaultColorFrameIncognito;
+  static const SkColor kDefaultColorFrameIncognitoInactive;
+  static const SkColor kDefaultColorToolbar;
+  static const SkColor kDefaultColorTabText;
+  static const SkColor kDefaultColorBackgroundTabText;
+  static const SkColor kDefaultColorBookmarkText;
+  static const SkColor kDefaultColorNTPBackground;
+  static const SkColor kDefaultColorNTPText;
+  static const SkColor kDefaultColorNTPLink;
+  static const SkColor kDefaultColorNTPHeader;
+  static const SkColor kDefaultColorNTPSection;
+  static const SkColor kDefaultColorNTPSectionText;
+  static const SkColor kDefaultColorNTPSectionLink;
+  static const SkColor kDefaultColorControlBackground;
+  static const SkColor kDefaultColorButtonBackground;
+
+  static const color_utils::HSL kDefaultTintButtons;
+  static const color_utils::HSL kDefaultTintFrame;
+  static const color_utils::HSL kDefaultTintFrameInactive;
+  static const color_utils::HSL kDefaultTintFrameIncognito;
+  static const color_utils::HSL kDefaultTintFrameIncognitoInactive;
+  static const color_utils::HSL kDefaultTintBackgroundTab;
+
   static const char* kDefaultThemeID;
 
   // Returns true if the image is themeable.  Safe to call on any thread.
   static bool IsThemeableImage(int resource_id);
 
+
   BrowserThemeProvider();
   virtual ~BrowserThemeProvider();
 
@@ -128,6 +190,10 @@ class BrowserThemeProvider : public NonThreadSafe,
   // locally customized.)
   std::string GetThemeID() const;
 
+  // Reads the image data from the theme file into the specified vector. Returns
+  // true on success.
+  RefCountedMemory* ReadThemeFileData(int id) const;
+
   // Convert a bitfield alignment into a string like "top left". Public so that
   // it can be used to generate CSS values. Takes a bitfield of AlignmentMasks.
   static std::string AlignmentToString(int alignment);
@@ -143,21 +209,44 @@ class BrowserThemeProvider : public NonThreadSafe,
   // Parse tiling values from something like "no-repeat" into a Tiling value.
   static int StringToTiling(const std::string& tiling);
 
-  // Returns the default tint for the given tint |id| TINT_* enum value.
-  static color_utils::HSL GetDefaultTint(int id);
-
-  // Returns the default color for the given color |id| COLOR_* enum value.
-  static SkColor GetDefaultColor(int id);
+  // Lock on write to themed_image_cache_ in UI thread; lock on all cache
+  // access in File thread. This allows the File thread and UI thread to
+  // both read themed images at the same time, while preventing simultaneous
+  // File thread read and UI thread write.
+  static Lock themed_image_cache_lock_;
 
   // Save the images to be written to disk, mapping file path to id.
   typedef std::map<FilePath, int> ImagesDiskCache;
 
+  // Cached images. We cache all retrieved and generated bitmaps and keep
+  // track of the pointers. We own these and will delete them when we're done
+  // using them.
+  typedef std::map<int, SkBitmap*> ImageCache;
+
  protected:
+  // Sets an individual color value.
+  void SetColor(const char* id, const SkColor& color);
+
+  // Sets an individual tint value.
+  void SetTint(const char* id, const color_utils::HSL& tint);
+
   // Get the specified tint - |id| is one of the TINT_* enum values.
   color_utils::HSL GetTint(int id) const;
 
+  // Generate any frame colors that weren't specified.
+  void GenerateFrameColors();
+
+  // Generate any frame images that weren't specified. The resulting images
+  // will be stored in our cache and written to disk.  If images have already
+  // been generated and cached, load them from disk.
+  void GenerateFrameImages() const;
+
+  // Generate any tab images that weren't specified. The resulting images
+  // will be stored in our cache.
+  void GenerateTabImages() const;
+
   // Clears all the override fields and saves the dictionary.
-  virtual void ClearAllThemeData();
+  void ClearAllThemeData();
 
   // Load theme data from preferences.
   virtual void LoadThemePrefs();
@@ -165,33 +254,116 @@ class BrowserThemeProvider : public NonThreadSafe,
   // Let all the browser views know that themes have changed.
   virtual void NotifyThemeChanged();
 
+  // Loads a bitmap from the theme, which may be tinted or
+  // otherwise modified, or an application default.
+  virtual SkBitmap* LoadThemeBitmap(int id) const;
+
+  // Save the modified bitmap at image_cache_[id].
+  virtual void SaveThemeBitmap(std::string resource_name, int id) const;
+
   // Clears the platform-specific caches. Do not call directly; it's called
   // from ClearCaches().
   virtual void FreePlatformCaches();
 
+  // The implementation of GenerateTabBackgroundBitmap(). That function also
+  // must be locked and touches caches; this function only deals with image
+  // generation.
+  SkBitmap* GenerateTabBackgroundBitmapImpl(int id) const;
+
   Profile* profile() { return profile_; }
 
+  // Subclasses may need us to not use the on-disk image cache. The GTK
+  // interface needs to generate some images itself.
+  void force_process_images() { process_images_ = true; }
+
  private:
   friend class BrowserThemeProviderTest;
 
-  // Saves the filename of the cached theme pack.
-  void SavePackName(const FilePath& pack_path);
+  typedef std::map<const int, std::string> ImageMap;
+  typedef std::map<const std::string, SkColor> ColorMap;
+  typedef std::map<const std::string, color_utils::HSL> TintMap;
+  typedef std::map<const std::string, int> DisplayPropertyMap;
+  typedef std::map<const int, scoped_refptr<RefCountedMemory> > RawDataMap;
+  typedef std::map<const int, std::string> ResourceNameMap;
+
+  // Returns the string key for the given tint |id| TINT_* enum value.
+  const std::string GetTintKey(int id) const;
+
+  // Returns the default tint for the given tint |id| TINT_* enum value.
+  color_utils::HSL GetDefaultTint(int id) const;
+
+  // Returns the string key for the given color |id| COLOR_* enum value.
+  const std::string GetColorKey(int id) const;
+
+  // Returns the default color for the given color |id| COLOR_* enum value.
+  SkColor GetDefaultColor(int id) const;
+
+  // Tint |bitmap| with the tint specified by |hsl_id|
+  SkBitmap TintBitmap(const SkBitmap& bitmap, int hsl_id) const;
+
+  // The following load data from specified dictionaries (either from
+  // preferences or from an extension manifest) and update our theme
+  // data appropriately.
+  // Allow any ResourceBundle image to be overridden. |images| should
+  // contain keys defined in ThemeResourceMap, and values as paths to
+  // the images on-disk.
+  void SetImageData(DictionaryValue* images, FilePath images_path);
+
+  // Set our theme colors. The keys of |colors| are any of the kColor*
+  // constants, and the values are a three-item list containing 8-bit
+  // RGB values.
+  void SetColorData(DictionaryValue* colors);
+
+  // Set tint data for our images and colors. The keys of |tints| are
+  // any of the kTint* contstants, and the values are a three-item list
+  // containing real numbers in the range 0-1 (and -1 for 'null').
+  void SetTintData(DictionaryValue* tints);
+
+  // Set miscellaneous display properties. While these can be defined as
+  // strings, they are currently stored as integers.
+  void SetDisplayPropertyData(DictionaryValue* display_properties);
+
+  // Create any images that aren't pregenerated (e.g. background tab images).
+  SkBitmap* GenerateTabBackgroundBitmap(int id) const;
+
+  // Save our data - when saving images we need the original dictionary
+  // from the extension because it contains the text ids that we want to save.
+  void SaveImageData(DictionaryValue* images) const;
+  void SaveColorData() const;
+  void SaveTintData() const;
+  void SaveDisplayPropertyData() const;
+
+  // Save the paths of data we have written to disk in prefs.
+  void SaveCachedImageData() const;
 
   // Save the id of the last theme installed.
   void SaveThemeID(const std::string& id);
 
-  // Implementation of SetTheme() (and the fallback from LoadThemePrefs() in
-  // case we don't have a theme pack).
-  void BuildFromExtension(Extension* extension);
+  // Frees generated images and clears the image cache.
+  void ClearCaches();
 
   // Remove preference values for themes that are no longer in use.
   void RemoveUnusedThemes();
 
+  // Encode image at image_cache_[id] as PNG and write to disk.
+  void WriteImagesToDisk() const;
+
+  // Do we have a custom frame image or custom tints?
+  bool ShouldTintFrames() const;
+
 #if defined(OS_LINUX)
   // Loads an image and flips it horizontally if |rtl_enabled| is true.
   GdkPixbuf* GetPixbufImpl(int id, bool rtl_enabled) const;
 #endif
 
+  mutable ImageCache image_cache_;
+
+  // Keep images generated for theme cache in their own place, so we can lock
+  // them on WRITE from UI thread and READ from file thread.  Read from UI
+  // thread will be allowed unlocked, because no other thread has write
+  // access to the cache.
+  mutable ImageCache themed_image_cache_;
+
 #if defined(OS_LINUX)
   typedef std::map<int, GdkPixbuf*> GdkPixbufMap;
   mutable GdkPixbufMap gdk_pixbufs_;
@@ -202,10 +374,25 @@ class BrowserThemeProvider : public NonThreadSafe,
   mutable NSColorMap nscolor_cache_;
 #endif
 
+  mutable ImagesDiskCache images_disk_cache_;
+
   ResourceBundle& rb_;
   Profile* profile_;
 
-  scoped_refptr<BrowserThemePack> theme_pack_;
+  ImageMap images_;
+  ColorMap colors_;
+  TintMap tints_;
+  mutable RawDataMap raw_data_;
+  DisplayPropertyMap display_properties_;
+
+  // Reverse of theme_resources_map, so we can cache images properly.
+  ResourceNameMap resource_names_;
+
+  // If true, process all images; if false, just load from disk.
+  bool process_images_;
+
+  // Where we will store our generated images.
+  FilePath image_dir_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserThemeProvider);
 };
diff --git a/chrome/browser/browser_theme_provider_mac.mm b/chrome/browser/browser_theme_provider_mac.mm
index ec3d4a8..65c2182 100644
--- a/chrome/browser/browser_theme_provider_mac.mm
+++ b/chrome/browser/browser_theme_provider_mac.mm
@@ -8,7 +8,6 @@
 
 #include "app/gfx/color_utils.h"
 #include "base/logging.h"
-#include "chrome/browser/browser_theme_pack.h"
 #include "skia/ext/skia_utils_mac.h"
 
 namespace {
@@ -76,8 +75,9 @@ NSColor* BrowserThemeProvider::GetNSColor(int id) const {
   if (nscolor_iter != nscolor_cache_.end())
     return nscolor_iter->second;
 
-  SkColor sk_color;
-  if (theme_pack_.get() && theme_pack_->GetColor(id, &sk_color)) {
+  ColorMap::const_iterator color_iter = colors_.find(GetColorKey(id));
+  if (color_iter != colors_.end()) {
+    const SkColor& sk_color = color_iter->second;
     NSColor* color = [NSColor
         colorWithCalibratedRed:SkColorGetR(sk_color)/255.0
                          green:SkColorGetG(sk_color)/255.0
@@ -102,8 +102,9 @@ NSColor* BrowserThemeProvider::GetNSColorTint(int id) const {
   if (nscolor_iter != nscolor_cache_.end())
     return nscolor_iter->second;
 
-  color_utils::HSL tint;
-  if (theme_pack_.get() && theme_pack_->GetTint(id, &tint)) {
+  TintMap::const_iterator tint_iter = tints_.find(GetTintKey(id));
+  if (tint_iter != tints_.end()) {
+    color_utils::HSL tint = tint_iter->second;
     CGFloat hue, saturation, brightness;
     HSLToHSB(tint, &hue, &saturation, &brightness);
 
diff --git a/chrome/browser/browser_theme_provider_unittest.cc b/chrome/browser/browser_theme_provider_unittest.cc
index 533c7af..6556a56 100644
--- a/chrome/browser/browser_theme_provider_unittest.cc
+++ b/chrome/browser/browser_theme_provider_unittest.cc
@@ -8,7 +8,87 @@
 #include "base/values.h"
 #include "base/json/json_reader.h"
 
-TEST(BrowserThemeProviderTest, AlignmentConversion) {
+class BrowserThemeProviderTest : public ::testing::Test {
+ public:
+  // Transformation for link underline colors.
+  SkColor BuildThirdOpacity(SkColor color_link) {
+    return SkColorSetA(color_link, SkColorGetA(color_link) / 3);
+  }
+
+  // Returns a mapping from each COLOR_* constant to the default value for this
+  // constant. Callers get this map, and then modify expected values and then
+  // run the resulting thing through VerifyColorMap().
+  std::map<int, SkColor> GetDefaultColorMap() {
+    std::map<int, SkColor> colors;
+    colors[BrowserThemeProvider::COLOR_FRAME] =
+        BrowserThemeProvider::kDefaultColorFrame;
+    colors[BrowserThemeProvider::COLOR_FRAME_INACTIVE] =
+        BrowserThemeProvider::kDefaultColorFrameInactive;
+    colors[BrowserThemeProvider::COLOR_FRAME_INCOGNITO] =
+        BrowserThemeProvider::kDefaultColorFrameIncognito;
+    colors[BrowserThemeProvider::COLOR_FRAME_INCOGNITO_INACTIVE] =
+        BrowserThemeProvider::kDefaultColorFrameIncognitoInactive;
+    colors[BrowserThemeProvider::COLOR_TOOLBAR] =
+        BrowserThemeProvider::kDefaultColorToolbar;
+    colors[BrowserThemeProvider::COLOR_TAB_TEXT] =
+        BrowserThemeProvider::kDefaultColorTabText;
+    colors[BrowserThemeProvider::COLOR_BACKGROUND_TAB_TEXT] =
+        BrowserThemeProvider::kDefaultColorBackgroundTabText;
+    colors[BrowserThemeProvider::COLOR_BOOKMARK_TEXT] =
+        BrowserThemeProvider::kDefaultColorBookmarkText;
+    colors[BrowserThemeProvider::COLOR_NTP_BACKGROUND] =
+        BrowserThemeProvider::kDefaultColorNTPBackground;
+    colors[BrowserThemeProvider::COLOR_NTP_TEXT] =
+        BrowserThemeProvider::kDefaultColorNTPText;
+    colors[BrowserThemeProvider::COLOR_NTP_LINK] =
+        BrowserThemeProvider::kDefaultColorNTPLink;
+    colors[BrowserThemeProvider::COLOR_NTP_LINK_UNDERLINE] =
+        BuildThirdOpacity(BrowserThemeProvider::kDefaultColorNTPLink);
+    colors[BrowserThemeProvider::COLOR_NTP_HEADER] =
+        BrowserThemeProvider::kDefaultColorNTPHeader;
+    colors[BrowserThemeProvider::COLOR_NTP_SECTION] =
+        BrowserThemeProvider::kDefaultColorNTPSection;
+    colors[BrowserThemeProvider::COLOR_NTP_SECTION_TEXT] =
+        BrowserThemeProvider::kDefaultColorNTPSectionText;
+    colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK] =
+        BrowserThemeProvider::kDefaultColorNTPSectionLink;
+    colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK_UNDERLINE] =
+        BuildThirdOpacity(BrowserThemeProvider::kDefaultColorNTPSectionLink);
+    colors[BrowserThemeProvider::COLOR_CONTROL_BACKGROUND] =
+        BrowserThemeProvider::kDefaultColorControlBackground;
+    colors[BrowserThemeProvider::COLOR_BUTTON_BACKGROUND] =
+        BrowserThemeProvider::kDefaultColorButtonBackground;
+
+    return colors;
+  }
+
+  void VerifyColorMap(const std::map<int, SkColor>& color_map) {
+    for (std::map<int, SkColor>::const_iterator it = color_map.begin();
+         it != color_map.end(); ++it) {
+      EXPECT_EQ(it->second, provider_.GetColor(it->first));
+    }
+  }
+
+  void LoadColorJSON(const std::string& json) {
+    scoped_ptr<Value> value(base::JSONReader::Read(json, false));
+    ASSERT_TRUE(value->IsType(Value::TYPE_DICTIONARY));
+    provider_.SetColorData(static_cast<DictionaryValue*>(value.get()));
+  }
+
+  void LoadTintJSON(const std::string& json) {
+    scoped_ptr<Value> value(base::JSONReader::Read(json, false));
+    ASSERT_TRUE(value->IsType(Value::TYPE_DICTIONARY));
+    provider_.SetTintData(static_cast<DictionaryValue*>(value.get()));
+  }
+
+  void GenerateFrameColors() {
+    provider_.GenerateFrameColors();
+  }
+
+  BrowserThemeProvider provider_;
+};
+
+TEST_F(BrowserThemeProviderTest, AlignmentConversion) {
   // Verify that we get out what we put in.
   std::string top_left = "top left";
   int alignment = BrowserThemeProvider::StringToAlignment(top_left);
@@ -33,7 +113,7 @@ TEST(BrowserThemeProviderTest, AlignmentConversion) {
   EXPECT_EQ("", BrowserThemeProvider::AlignmentToString(alignment));
 }
 
-TEST(BrowserThemeProviderTest, AlignmentConversionInput) {
+TEST_F(BrowserThemeProviderTest, AlignmentConversionInput) {
   // Verify that we output in an expected format.
   int alignment = BrowserThemeProvider::StringToAlignment("right bottom");
   EXPECT_EQ("bottom right", BrowserThemeProvider::AlignmentToString(alignment));
@@ -50,3 +130,98 @@ TEST(BrowserThemeProviderTest, AlignmentConversionInput) {
   alignment = BrowserThemeProvider::StringToAlignment("new zealandtop");
   EXPECT_EQ("", BrowserThemeProvider::AlignmentToString(alignment));
 }
+
+TEST_F(BrowserThemeProviderTest, ColorSanityCheck) {
+  // Make sure that BrowserThemeProvider returns all the default colors if it
+  // isn't provided any color overrides.
+  std::map<int, SkColor> colors = GetDefaultColorMap();
+  VerifyColorMap(colors);
+}
+
+TEST_F(BrowserThemeProviderTest, DeriveUnderlineLinkColor) {
+  // If we specify a link color, but don't specify the underline color, the
+  // theme provider should create one.
+  std::string color_json = "{ \"ntp_link\": [128, 128, 128, 1],"
+                           "  \"ntp_section_link\": [128, 128, 128, 1] }";
+  LoadColorJSON(color_json);
+
+  std::map<int, SkColor> colors = GetDefaultColorMap();
+  SkColor link_color = SkColorSetARGB(255, 128, 128, 128);
+  colors[BrowserThemeProvider::COLOR_NTP_LINK] = link_color;
+  colors[BrowserThemeProvider::COLOR_NTP_LINK_UNDERLINE] =
+      BuildThirdOpacity(link_color);
+  colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK] = link_color;
+  colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK_UNDERLINE] =
+      BuildThirdOpacity(link_color);
+
+  VerifyColorMap(colors);
+}
+
+TEST_F(BrowserThemeProviderTest, ProvideUnderlineLinkColor) {
+  // If we specify the underline color, it shouldn't try to generate one.x
+  std::string color_json = "{ \"ntp_link\": [128, 128, 128],"
+                           "  \"ntp_link_underline\": [255, 255, 255],"
+                           "  \"ntp_section_link\": [128, 128, 128],"
+                           "  \"ntp_section_link_underline\": [255, 255, 255]"
+                           "}";
+  LoadColorJSON(color_json);
+
+  std::map<int, SkColor> colors = GetDefaultColorMap();
+  SkColor link_color = SkColorSetRGB(128, 128, 128);
+  SkColor underline_color = SkColorSetRGB(255, 255, 255);
+  colors[BrowserThemeProvider::COLOR_NTP_LINK] = link_color;
+  colors[BrowserThemeProvider::COLOR_NTP_LINK_UNDERLINE] = underline_color;
+  colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK] = link_color;
+  colors[BrowserThemeProvider::COLOR_NTP_SECTION_LINK_UNDERLINE] =
+      underline_color;
+
+  VerifyColorMap(colors);
+}
+
+TEST_F(BrowserThemeProviderTest, UseSectionColorAsNTPHeader) {
+  std::string color_json = "{ \"ntp_section\": [190, 190, 190] }";
+  LoadColorJSON(color_json);
+
+  std::map<int, SkColor> colors = GetDefaultColorMap();
+  SkColor ntp_color = SkColorSetRGB(190, 190, 190);
+  colors[BrowserThemeProvider::COLOR_NTP_HEADER] = ntp_color;
+  colors[BrowserThemeProvider::COLOR_NTP_SECTION] = ntp_color;
+  VerifyColorMap(colors);
+}
+
+TEST_F(BrowserThemeProviderTest, ProvideNtpHeaderColor) {
+  std::string color_json = "{ \"ntp_header\": [120, 120, 120], "
+                           "  \"ntp_section\": [190, 190, 190] }";
+  LoadColorJSON(color_json);
+
+  std::map<int, SkColor> colors = GetDefaultColorMap();
+  SkColor ntp_header = SkColorSetRGB(120, 120, 120);
+  SkColor ntp_section = SkColorSetRGB(190, 190, 190);
+  colors[BrowserThemeProvider::COLOR_NTP_HEADER] = ntp_header;
+  colors[BrowserThemeProvider::COLOR_NTP_SECTION] = ntp_section;
+  VerifyColorMap(colors);
+}
+
+TEST_F(BrowserThemeProviderTest, DefaultTintingDefaultColors) {
+  // Default tints for buttons and frames...are no tints! So make sure that
+  // when we try to generate frame colors, we end up with the same.
+  GenerateFrameColors();
+
+  std::map<int, SkColor> colors = GetDefaultColorMap();
+  colors[BrowserThemeProvider::COLOR_FRAME] =
+      HSLShift(BrowserThemeProvider::kDefaultColorFrame,
+               BrowserThemeProvider::kDefaultTintFrame);
+  colors[BrowserThemeProvider::COLOR_FRAME_INACTIVE] =
+      HSLShift(BrowserThemeProvider::kDefaultColorFrame,
+               BrowserThemeProvider::kDefaultTintFrameInactive);
+  colors[BrowserThemeProvider::COLOR_FRAME_INCOGNITO] =
+      HSLShift(BrowserThemeProvider::kDefaultColorFrame,
+               BrowserThemeProvider::kDefaultTintFrameIncognito);
+  colors[BrowserThemeProvider::COLOR_FRAME_INCOGNITO_INACTIVE] =
+      HSLShift(BrowserThemeProvider::kDefaultColorFrame,
+               BrowserThemeProvider::kDefaultTintFrameIncognitoInactive);
+  VerifyColorMap(colors);
+}
+
+// TODO(erg): Test more tinting combinations. For example, with non-default
+// colors or when providing tints.
diff --git a/chrome/browser/cocoa/download_shelf_controller.mm b/chrome/browser/cocoa/download_shelf_controller.mm
index ae9395b..5d494fc 100644
--- a/chrome/browser/cocoa/download_shelf_controller.mm
+++ b/chrome/browser/cocoa/download_shelf_controller.mm
@@ -114,12 +114,10 @@ const NSTimeInterval kDownloadShelfCloseDuration = 0.12;
   BOOL useDefaultColor = YES;
   if (bridge_.get() && bridge_->browser() && bridge_->browser()->profile()) {
     ThemeProvider* provider = bridge_->browser()->profile()->GetThemeProvider();
-    if (provider) {
+    if (provider)
       useDefaultColor = provider->GetColor(
           BrowserThemeProvider::COLOR_BOOKMARK_TEXT) ==
-          BrowserThemeProvider::GetDefaultColor(
-              BrowserThemeProvider::COLOR_BOOKMARK_TEXT);
-    }
+          BrowserThemeProvider::kDefaultColorBookmarkText;
   }
 
   NSColor* color = useDefaultColor ?
diff --git a/chrome/browser/extensions/theme_installed_infobar_delegate.cc b/chrome/browser/extensions/theme_installed_infobar_delegate.cc
index caea07d..879cbb2 100644
--- a/chrome/browser/extensions/theme_installed_infobar_delegate.cc
+++ b/chrome/browser/extensions/theme_installed_infobar_delegate.cc
@@ -27,9 +27,7 @@ ThemeInstalledInfoBarDelegate::ThemeInstalledInfoBarDelegate(
 
 void ThemeInstalledInfoBarDelegate::InfoBarClosed() {
   ExtensionsService* service = profile_->GetExtensionsService();
-  // Only delete the theme if we've installed a new theme and not the same
-  // theme on top of the current one.
-  if (service && previous_theme_id_ != new_theme_id_) {
+  if (service) {
     std::string uninstall_id;
     if (was_canceled_)
       uninstall_id = new_theme_id_;
diff --git a/chrome/browser/gtk/download_shelf_gtk.cc b/chrome/browser/gtk/download_shelf_gtk.cc
index 6d94b9f..8601855 100644
--- a/chrome/browser/gtk/download_shelf_gtk.cc
+++ b/chrome/browser/gtk/download_shelf_gtk.cc
@@ -201,8 +201,7 @@ void DownloadShelfGtk::Observe(NotificationType type,
     // bad for some dark themes.
     bool use_default_color = theme_provider_->GetColor(
         BrowserThemeProvider::COLOR_BOOKMARK_TEXT) ==
-        BrowserThemeProvider::GetDefaultColor(
-            BrowserThemeProvider::COLOR_BOOKMARK_TEXT);
+        BrowserThemeProvider::kDefaultColorBookmarkText;
     GdkColor bookmark_color = theme_provider_->GetGdkColor(
         BrowserThemeProvider::COLOR_BOOKMARK_TEXT);
     gtk_chrome_link_button_set_normal_color(
diff --git a/chrome/browser/gtk/gtk_theme_provider.cc b/chrome/browser/gtk/gtk_theme_provider.cc
index 9330f30..4f35110 100644
--- a/chrome/browser/gtk/gtk_theme_provider.cc
+++ b/chrome/browser/gtk/gtk_theme_provider.cc
@@ -8,8 +8,6 @@
 
 #include "app/gfx/color_utils.h"
 #include "app/gfx/gtk_util.h"
-#include "app/gfx/skbitmap_operations.h"
-#include "base/stl_util-inl.h"
 #include "chrome/browser/metrics/user_metrics.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/gtk/cairo_cached_surface.h"
@@ -59,26 +57,6 @@ SkColor GdkToSkColor(GdkColor* color) {
                        color->blue >> 8);
 }
 
-// A list of images that we provide while in gtk mode.
-const int kThemeImages[] = {
-  IDR_THEME_TOOLBAR,
-  IDR_THEME_TAB_BACKGROUND,
-  IDR_THEME_TAB_BACKGROUND_INCOGNITO,
-  IDR_THEME_FRAME,
-  IDR_THEME_FRAME_INACTIVE,
-  IDR_THEME_FRAME_INCOGNITO,
-  IDR_THEME_FRAME_INCOGNITO_INACTIVE,
-};
-
-bool IsOverridableImage(int id) {
-  for (size_t i = 0; i < arraysize(kThemeImages); ++i) {
-    if (kThemeImages[i] == id)
-      return true;
-  }
-
-  return false;
-}
-
 }  // namespace
 
 GtkWidget* GtkThemeProvider::icon_widget_ = NULL;
@@ -106,9 +84,9 @@ GtkThemeProvider::~GtkThemeProvider() {
   gtk_widget_destroy(fake_window_);
   fake_label_.Destroy();
 
-  // We have to call this because FreePlatformCached() in ~BrowserThemeProvider
-  // doesn't call the right virutal FreePlatformCaches.
-  FreePlatformCaches();
+  // We have to call this because ClearCaches in ~BrowserThemeProvider doesn't
+  // call the right virutal FreePlatformCaches.
+  FreePerDisplaySurfaces();
 
   // Disconnect from the destroy signal of any redisual widgets in
   // |chrome_buttons_|.
@@ -125,39 +103,6 @@ void GtkThemeProvider::Init(Profile* profile) {
   BrowserThemeProvider::Init(profile);
 }
 
-SkBitmap* GtkThemeProvider::GetBitmapNamed(int id) const {
-  if (use_gtk_ && IsOverridableImage(id)) {
-    // Try to get our cached version:
-    ImageCache::const_iterator it = gtk_images_.find(id);
-    if (it != gtk_images_.end())
-      return it->second;
-
-    // We haven't built this image yet:
-    SkBitmap* bitmap = GenerateGtkThemeBitmap(id);
-    gtk_images_[id] = bitmap;
-    return bitmap;
-  }
-
-  return BrowserThemeProvider::GetBitmapNamed(id);
-}
-
-SkColor GtkThemeProvider::GetColor(int id) const {
-  if (use_gtk_) {
-    ColorMap::const_iterator it = colors_.find(id);
-    if (it != colors_.end())
-      return it->second;
-  }
-
-  return BrowserThemeProvider::GetColor(id);
-}
-
-bool GtkThemeProvider::HasCustomImage(int id) const {
-  if (use_gtk_)
-    return IsOverridableImage(id);
-
-  return BrowserThemeProvider::HasCustomImage(id);
-}
-
 void GtkThemeProvider::InitThemesFor(NotificationObserver* observer) {
   observer->Observe(NotificationType::BROWSER_THEME_CHANGED,
                     Source<ThemeProvider>(this),
@@ -400,10 +345,40 @@ void GtkThemeProvider::NotifyThemeChanged() {
   }
 }
 
+SkBitmap* GtkThemeProvider::LoadThemeBitmap(int id) const {
+  if (use_gtk_) {
+    if (id == IDR_THEME_TOOLBAR) {
+      GtkStyle* style = gtk_rc_get_style(fake_window_);
+      GdkColor* color = &style->bg[GTK_STATE_NORMAL];
+      SkBitmap* bitmap = new SkBitmap;
+      bitmap->setConfig(SkBitmap::kARGB_8888_Config,
+                        kToolbarImageWidth, kToolbarImageHeight);
+      bitmap->allocPixels();
+      bitmap->eraseRGB(color->red >> 8, color->green >> 8, color->blue >> 8);
+      return bitmap;
+    }
+    if ((id == IDR_THEME_TAB_BACKGROUND) ||
+        (id == IDR_THEME_TAB_BACKGROUND_INCOGNITO))
+      return GenerateTabBackgroundBitmapImpl(id);
+  }
+
+  return BrowserThemeProvider::LoadThemeBitmap(id);
+}
+
+void GtkThemeProvider::SaveThemeBitmap(const std::string resource_name,
+                                       int id) const {
+  if (!use_gtk_) {
+    // Prevent us from writing out our mostly unused resources in gtk theme
+    // mode. Simply preventing us from writing this data out in gtk mode isn't
+    // the best design, but this would probably be a very invasive change on
+    // all three platforms otherwise.
+    BrowserThemeProvider::SaveThemeBitmap(resource_name, id);
+  }
+}
+
 void GtkThemeProvider::FreePlatformCaches() {
   BrowserThemeProvider::FreePlatformCaches();
   FreePerDisplaySurfaces();
-  STLDeleteValues(&gtk_images_);
 }
 
 // static
@@ -500,35 +475,34 @@ void GtkThemeProvider::LoadGtkValues() {
     }
   }
 
-  SetThemeTintFromGtk(BrowserThemeProvider::TINT_BUTTONS, &button_color);
-  SetThemeTintFromGtk(BrowserThemeProvider::TINT_FRAME, &frame_color);
-  SetThemeTintFromGtk(BrowserThemeProvider::TINT_FRAME_INCOGNITO, &frame_color);
-  SetThemeTintFromGtk(BrowserThemeProvider::TINT_BACKGROUND_TAB, &frame_color);
-
-  SetThemeColorFromGtk(BrowserThemeProvider::COLOR_FRAME, &frame_color);
-  BuildTintedFrameColor(BrowserThemeProvider::COLOR_FRAME_INACTIVE,
-                        BrowserThemeProvider::TINT_FRAME_INACTIVE);
-  BuildTintedFrameColor(BrowserThemeProvider::COLOR_FRAME_INCOGNITO,
-                        BrowserThemeProvider::TINT_FRAME_INCOGNITO);
-  BuildTintedFrameColor(BrowserThemeProvider::COLOR_FRAME_INCOGNITO_INACTIVE,
-                        BrowserThemeProvider::TINT_FRAME_INCOGNITO_INACTIVE);
-
+  SetThemeColorFromGtk(kColorFrame, &frame_color);
   // Skip COLOR_FRAME_INACTIVE and the incognito colors, as they will be
-  // autogenerated from tints. TODO(erg): Still true?
-  SetThemeColorFromGtk(BrowserThemeProvider::COLOR_TOOLBAR, &toolbar_color);
-  SetThemeColorFromGtk(BrowserThemeProvider::COLOR_TAB_TEXT, &label_color);
-  SetThemeColorFromGtk(BrowserThemeProvider::COLOR_BOOKMARK_TEXT, &label_color);
-  SetThemeColorFromGtk(BrowserThemeProvider::COLOR_CONTROL_BACKGROUND,
+  // autogenerated from tints.
+  SetThemeColorFromGtk(kColorToolbar, &toolbar_color);
+  SetThemeColorFromGtk(kColorTabText, &label_color);
+  SetThemeColorFromGtk(kColorBookmarkText, &label_color);
+  SetThemeColorFromGtk(kColorControlBackground,
                        &window_style->bg[GTK_STATE_NORMAL]);
-  SetThemeColorFromGtk(BrowserThemeProvider::COLOR_BUTTON_BACKGROUND,
+  SetThemeColorFromGtk(kColorButtonBackground,
                        &window_style->bg[GTK_STATE_NORMAL]);
 
+  SetThemeTintFromGtk(kTintButtons, &button_color,
+                      kDefaultTintButtons);
+  SetThemeTintFromGtk(kTintFrame, &frame_color,
+                      kDefaultTintFrame);
+  SetThemeTintFromGtk(kTintFrameIncognito,
+                      &frame_color,
+                      kDefaultTintFrameIncognito);
+  SetThemeTintFromGtk(kTintBackgroundTab,
+                      &frame_color,
+                      kDefaultTintBackgroundTab);
+
   // The inactive frame color never occurs naturally in the theme, as it is a
   // tinted version of |frame_color|. We generate another color based on the
   // background tab color, with the lightness and saturation moved in the
   // opposite direction. (We don't touch the hue, since there should be subtle
   // hints of the color in the text.)
-  color_utils::HSL inactive_tab_text_hsl = tints_[TINT_BACKGROUND_TAB];
+  color_utils::HSL inactive_tab_text_hsl = GetTint(TINT_BACKGROUND_TAB);
   if (inactive_tab_text_hsl.l < 0.5)
     inactive_tab_text_hsl.l = kDarkInactiveLuminance;
   else
@@ -539,26 +513,32 @@ void GtkThemeProvider::LoadGtkValues() {
   else
     inactive_tab_text_hsl.s = kLightInactiveSaturation;
 
-  colors_[BrowserThemeProvider::COLOR_BACKGROUND_TAB_TEXT] =
-      color_utils::HSLToSkColor(inactive_tab_text_hsl, 255);
+  SetColor(kColorBackgroundTabText,
+           color_utils::HSLToSkColor(inactive_tab_text_hsl, 255));
 
   // The inactive color/tint is special: We *must* use the exact insensitive
   // color for all inactive windows, otherwise we end up neon pink half the
   // time.
-  SetThemeColorFromGtk(BrowserThemeProvider::COLOR_FRAME_INACTIVE,
-                       &inactive_frame_color);
-  SetTintToExactColor(BrowserThemeProvider::TINT_FRAME_INACTIVE,
-                      &inactive_frame_color);
-  SetTintToExactColor(BrowserThemeProvider::TINT_FRAME_INCOGNITO_INACTIVE,
-                      &inactive_frame_color);
+  SetThemeColorFromGtk(kColorFrameInactive, &inactive_frame_color);
+  SetThemeTintFromGtk(kTintFrameInactive, &inactive_frame_color,
+                      kExactColor);
+  SetThemeTintFromGtk(kTintFrameIncognitoInactive, &inactive_frame_color,
+                      kExactColor);
+
+  force_process_images();
+  GenerateFrameColors();
+  AutoLock lock(themed_image_cache_lock_);
+  GenerateFrameImages();
 }
 
-void GtkThemeProvider::SetThemeColorFromGtk(int id, GdkColor* color) {
-  colors_[id] = GdkToSkColor(color);
+void GtkThemeProvider::SetThemeColorFromGtk(const char* id, GdkColor* color) {
+  SetColor(id, GdkToSkColor(color));
 }
 
-void GtkThemeProvider::SetThemeTintFromGtk(int id, GdkColor* color) {
-  color_utils::HSL default_tint = GetDefaultTint(id);
+void GtkThemeProvider::SetThemeTintFromGtk(
+    const char* id,
+    GdkColor* color,
+    const color_utils::HSL& default_tint) {
   color_utils::HSL hsl;
   color_utils::SkColorToHSL(GdkToSkColor(color), &hsl);
 
@@ -567,19 +547,7 @@ void GtkThemeProvider::SetThemeTintFromGtk(int id, GdkColor* color) {
 
   if (default_tint.l != -1)
     hsl.l = default_tint.l;
-
-  tints_[id] = hsl;
-}
-
-void GtkThemeProvider::BuildTintedFrameColor(int color_id, int tint_id) {
-  colors_[color_id] = HSLShift(colors_[BrowserThemeProvider::COLOR_FRAME],
-                               tints_[tint_id]);
-}
-
-void GtkThemeProvider::SetTintToExactColor(int id, GdkColor* color) {
-  color_utils::HSL hsl;
-  color_utils::SkColorToHSL(GdkToSkColor(color), &hsl);
-  tints_[id] = hsl;
+  SetTint(id, hsl);
 }
 
 void GtkThemeProvider::FreePerDisplaySurfaces() {
@@ -593,55 +561,6 @@ void GtkThemeProvider::FreePerDisplaySurfaces() {
   per_display_surfaces_.clear();
 }
 
-SkBitmap* GtkThemeProvider::GenerateGtkThemeBitmap(int id) const {
-  switch (id) {
-    case IDR_THEME_TOOLBAR: {
-      GtkStyle* style = gtk_rc_get_style(fake_window_);
-      GdkColor* color = &style->bg[GTK_STATE_NORMAL];
-      SkBitmap* bitmap = new SkBitmap;
-      bitmap->setConfig(SkBitmap::kARGB_8888_Config,
-                        kToolbarImageWidth, kToolbarImageHeight);
-      bitmap->allocPixels();
-      bitmap->eraseRGB(color->red >> 8, color->green >> 8, color->blue >> 8);
-      return bitmap;
-    }
-    case IDR_THEME_TAB_BACKGROUND:
-      return GenerateTabImage(IDR_THEME_FRAME);
-    case IDR_THEME_TAB_BACKGROUND_INCOGNITO:
-      return GenerateTabImage(IDR_THEME_FRAME_INCOGNITO);
-    case IDR_THEME_FRAME:
-      return GenerateFrameImage(BrowserThemeProvider::TINT_FRAME);
-    case IDR_THEME_FRAME_INACTIVE:
-      return GenerateFrameImage(BrowserThemeProvider::TINT_FRAME_INACTIVE);
-    case IDR_THEME_FRAME_INCOGNITO:
-      return GenerateFrameImage(BrowserThemeProvider::TINT_FRAME_INCOGNITO);
-    case IDR_THEME_FRAME_INCOGNITO_INACTIVE: {
-      return GenerateFrameImage(
-          BrowserThemeProvider::TINT_FRAME_INCOGNITO_INACTIVE);
-    }
-  }
-
-  NOTREACHED() << "Invalid bitmap request " << id;
-  return NULL;
-}
-
-SkBitmap* GtkThemeProvider::GenerateFrameImage(int tint_id) const {
-  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-  scoped_ptr<SkBitmap> frame(new SkBitmap(*rb.GetBitmapNamed(IDR_THEME_FRAME)));
-  TintMap::const_iterator it = tints_.find(tint_id);
-  DCHECK(it != tints_.end());
-  return new SkBitmap(SkBitmapOperations::CreateHSLShiftedBitmap(*frame,
-                                                                 it->second));
-}
-
-SkBitmap* GtkThemeProvider::GenerateTabImage(int base_id) const {
-  SkBitmap* base_image = GetBitmapNamed(base_id);
-  SkBitmap bg_tint = SkBitmapOperations::CreateHSLShiftedBitmap(
-      *base_image, GetTint(BrowserThemeProvider::TINT_BACKGROUND_TAB));
-  return new SkBitmap(SkBitmapOperations::CreateTiledBitmap(
-      bg_tint, 0, 0, bg_tint.width(), bg_tint.height()));
-}
-
 void GtkThemeProvider::OnDestroyChromeButton(GtkWidget* button,
                                              GtkThemeProvider* provider) {
   std::vector<GtkWidget*>::iterator it =
diff --git a/chrome/browser/gtk/gtk_theme_provider.h b/chrome/browser/gtk/gtk_theme_provider.h
index 44fed99..60d72e7 100644
--- a/chrome/browser/gtk/gtk_theme_provider.h
+++ b/chrome/browser/gtk/gtk_theme_provider.h
@@ -40,9 +40,6 @@ class GtkThemeProvider : public BrowserThemeProvider,
   // Sets that we aren't using the system theme, then calls
   // BrowserThemeProvider's implementation.
   virtual void Init(Profile* profile);
-  virtual SkBitmap* GetBitmapNamed(int id) const;
-  virtual SkColor GetColor(int id) const;
-  virtual bool HasCustomImage(int id) const;
   virtual void SetTheme(Extension* extension);
   virtual void UseDefaultTheme();
   virtual void SetNativeTheme();
@@ -89,17 +86,24 @@ class GtkThemeProvider : public BrowserThemeProvider,
   static GdkPixbuf* GetFolderIcon(bool native);
   static GdkPixbuf* GetDefaultFavicon(bool native);
 
- private:
-  typedef std::map<int, SkColor> ColorMap;
-  typedef std::map<int, color_utils::HSL> TintMap;
-  typedef std::map<int, SkBitmap*> ImageCache;
+ protected:
+  // Possibly creates a theme specific version of theme_toolbar_default.
+  // (minimally acceptable version right now, which is just a fill of the bg
+  // color; this should instead invoke gtk_draw_box(...) for complex theme
+  // engines.)
+  virtual SkBitmap* LoadThemeBitmap(int id) const;
 
+ private:
   // Load theme data from preferences, possibly picking colors from GTK.
   virtual void LoadThemePrefs();
 
   // Let all the browser views know that themes have changed.
   virtual void NotifyThemeChanged();
 
+  // If use_gtk_ is true, completely ignores this call. Otherwise passes it to
+  // the superclass.
+  virtual void SaveThemeBitmap(const std::string resource_name, int id) const;
+
   // Additionally frees the CairoCachedSurfaces.
   virtual void FreePlatformCaches();
 
@@ -111,10 +115,9 @@ class GtkThemeProvider : public BrowserThemeProvider,
   void LoadGtkValues();
 
   // Sets the underlying theme colors/tints from a GTK color.
-  void SetThemeColorFromGtk(int id, GdkColor* color);
-  void SetThemeTintFromGtk(int id, GdkColor* color);
-  void BuildTintedFrameColor(int color_id, int tint_id);
-  void SetTintToExactColor(int id, GdkColor* color);
+  void SetThemeColorFromGtk(const char* id, GdkColor* color);
+  void SetThemeTintFromGtk(const char* id, GdkColor* color,
+                           const color_utils::HSL& default_tint);
 
   // Split out from FreePlatformCaches so it can be called in our destructor;
   // FreePlatformCaches() is called from the BrowserThemeProvider's destructor,
@@ -122,16 +125,6 @@ class GtkThemeProvider : public BrowserThemeProvider,
   // points to GtkThemeProvider's version.
   void FreePerDisplaySurfaces();
 
-  // Lazily generates each bitmap used in the gtk theme.
-  SkBitmap* GenerateGtkThemeBitmap(int id) const;
-
-  // Tints IDR_THEME_FRAME based based on |tint_id|. Used during lazy
-  // generation of the gtk theme bitmaps.
-  SkBitmap* GenerateFrameImage(int tint_id) const;
-
-  // Takes the base frame image |base_id| and tints it with |tint_id|.
-  SkBitmap* GenerateTabImage(int base_id) const;
-
   // A notification from the GtkChromeButton GObject destructor that we should
   // remove it from our internal list.
   static void OnDestroyChromeButton(GtkWidget* button,
@@ -149,15 +142,6 @@ class GtkThemeProvider : public BrowserThemeProvider,
   // them of theme changes.
   std::vector<GtkWidget*> chrome_buttons_;
 
-  // Tints and colors calculated by LoadGtkValues() that are given to the
-  // caller while |use_gtk_| is true.
-  ColorMap colors_;
-  TintMap tints_;
-
-  // Image cache of lazily created images, created when requested by
-  // GetBitmapNamed().
-  mutable ImageCache gtk_images_;
-
   // Cairo surfaces for each GdkDisplay.
   typedef std::map<int, CairoCachedSurface*> CairoCachedSurfaceMap;
   typedef std::map<GdkDisplay*, CairoCachedSurfaceMap> PerDisplaySurfaceMap;
diff --git a/chrome/browser/gtk/gtk_theme_provider_unittest.cc b/chrome/browser/gtk/gtk_theme_provider_unittest.cc
index 93012ba..c3b85cb 100644
--- a/chrome/browser/gtk/gtk_theme_provider_unittest.cc
+++ b/chrome/browser/gtk/gtk_theme_provider_unittest.cc
@@ -35,6 +35,11 @@ class GtkThemeProviderTest : public testing::Test {
     provider_ = GtkThemeProvider::GetFrom(&profile_);
   }
 
+  void UseThemeProvider(GtkThemeProvider* provider) {
+    profile_.UseThemeProvider(provider);
+    provider_ = GtkThemeProvider::GetFrom(&profile_);
+  }
+
  protected:
   TestingProfile profile_;
 
@@ -46,11 +51,42 @@ TEST_F(GtkThemeProviderTest, DefaultValues) {
   BuildProvider();
 
   // Test that we get the default theme colors back when in normal mode.
-  for (int i = BrowserThemeProvider::COLOR_FRAME;
-       i <= BrowserThemeProvider::COLOR_BUTTON_BACKGROUND; ++i) {
-    EXPECT_EQ(provider_->GetColor(i), BrowserThemeProvider::GetDefaultColor(i))
-        << "Wrong default color for " << i;
-  }
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_FRAME),
+            BrowserThemeProvider::kDefaultColorFrame);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_FRAME_INACTIVE),
+            BrowserThemeProvider::kDefaultColorFrameInactive);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_FRAME_INCOGNITO),
+            BrowserThemeProvider::kDefaultColorFrameIncognito);
+  EXPECT_EQ(provider_->GetColor(
+      BrowserThemeProvider::COLOR_FRAME_INCOGNITO_INACTIVE),
+      BrowserThemeProvider::kDefaultColorFrameIncognitoInactive);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_TOOLBAR),
+            BrowserThemeProvider::kDefaultColorToolbar);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_TAB_TEXT),
+            BrowserThemeProvider::kDefaultColorTabText);
+  EXPECT_EQ(provider_->GetColor(
+      BrowserThemeProvider::COLOR_BACKGROUND_TAB_TEXT),
+      BrowserThemeProvider::kDefaultColorBackgroundTabText);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_BOOKMARK_TEXT),
+            BrowserThemeProvider::kDefaultColorBookmarkText);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_NTP_BACKGROUND),
+            BrowserThemeProvider::kDefaultColorNTPBackground);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_NTP_TEXT),
+            BrowserThemeProvider::kDefaultColorNTPText);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_NTP_LINK),
+            BrowserThemeProvider::kDefaultColorNTPLink);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_NTP_HEADER),
+            BrowserThemeProvider::kDefaultColorNTPHeader);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_NTP_SECTION),
+            BrowserThemeProvider::kDefaultColorNTPSection);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_NTP_SECTION_TEXT),
+            BrowserThemeProvider::kDefaultColorNTPSectionText);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_NTP_SECTION_LINK),
+            BrowserThemeProvider::kDefaultColorNTPSectionLink);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_CONTROL_BACKGROUND),
+            BrowserThemeProvider::kDefaultColorControlBackground);
+  EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_BUTTON_BACKGROUND),
+            BrowserThemeProvider::kDefaultColorButtonBackground);
 }
 
 TEST_F(GtkThemeProviderTest, UsingGtkValues) {
@@ -68,3 +104,32 @@ TEST_F(GtkThemeProviderTest, UsingGtkValues) {
   EXPECT_EQ(provider_->GetColor(BrowserThemeProvider::COLOR_TAB_TEXT),
             GdkToSkColor(&label_color));
 }
+
+// Helper class to GtkThemeProviderTest.UsingGtkFrame.
+class ImageVerifierGtkThemeProvider : public GtkThemeProvider {
+ public:
+  ImageVerifierGtkThemeProvider() : theme_toolbar_(NULL) { }
+
+  virtual SkBitmap* LoadThemeBitmap(int id) const {
+    if (id != IDR_THEME_TOOLBAR)
+      return GtkThemeProvider::LoadThemeBitmap(id);
+    theme_toolbar_ = GtkThemeProvider::LoadThemeBitmap(id);
+    return theme_toolbar_;
+  }
+
+  mutable SkBitmap* theme_toolbar_;
+};
+
+TEST_F(GtkThemeProviderTest, InjectsToolbar) {
+  SetUseGtkTheme(true);
+  ImageVerifierGtkThemeProvider* verifier_provider =
+      new ImageVerifierGtkThemeProvider;
+  UseThemeProvider(verifier_provider);
+
+  // Make sure the image we get from the public BrowserThemeProvider interface
+  // is the one we injected through GtkThemeProvider.
+  SkBitmap* image = provider_->GetBitmapNamed(IDR_THEME_TOOLBAR);
+  EXPECT_TRUE(verifier_provider->theme_toolbar_);
+  EXPECT_TRUE(image);
+  EXPECT_EQ(verifier_provider->theme_toolbar_, image);
+}
diff --git a/chrome/browser/profile.cc b/chrome/browser/profile.cc
index 3f5deee..22444f4 100644
--- a/chrome/browser/profile.cc
+++ b/chrome/browser/profile.cc
@@ -150,7 +150,6 @@ void Profile::RegisterUserPrefs(PrefService* prefs) {
 #if defined(OS_LINUX)
   prefs->RegisterBooleanPref(prefs::kUsesSystemTheme, false);
 #endif
-  prefs->RegisterFilePathPref(prefs::kCurrentThemePackFilename, FilePath());
   prefs->RegisterStringPref(prefs::kCurrentThemeID,
                             UTF8ToWide(BrowserThemeProvider::kDefaultThemeID));
   prefs->RegisterDictionaryPref(prefs::kCurrentThemeImages);
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 5ac8be1..21ab8e9 100755
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -188,8 +188,6 @@
         'browser/browser_process_impl.h',
         'browser/browser_shutdown.cc',
         'browser/browser_shutdown.h',
-        'browser/browser_theme_pack.cc',
-        'browser/browser_theme_pack.h',
         'browser/browser_theme_provider_gtk.cc',
         'browser/browser_theme_provider_mac.mm',
         'browser/browser_theme_provider.cc',
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 801b6be..af198977 100755
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -526,7 +526,6 @@
         'browser/bookmarks/bookmark_table_model_unittest.cc',
         'browser/bookmarks/bookmark_utils_unittest.cc',
         'browser/browser_commands_unittest.cc',
-        'browser/browser_theme_pack_unittest.cc',
         'browser/browser_theme_provider_unittest.cc',
         'browser/browser_unittest.cc',
         'browser/chrome_browser_application_mac_unittest.mm',
diff --git a/chrome/common/chrome_constants.cc b/chrome/common/chrome_constants.cc
index 1b85a19..1a936b5 100644
--- a/chrome/common/chrome_constants.cc
+++ b/chrome/common/chrome_constants.cc
@@ -84,7 +84,7 @@ const FilePath::CharType kOffTheRecordMediaCacheDirname[] =
     FPL("Incognito Media Cache");
 const FilePath::CharType kAppCacheDirname[] = FPL("Application Cache");
 const wchar_t kChromePluginDataDirname[] = L"Plugin Data";
-const FilePath::CharType kThemePackFilename[] = FPL("Cached Theme.pak");
+const FilePath::CharType kThemeImagesDirname[] = FPL("Cached Theme Images");
 const FilePath::CharType kCookieFilename[] = FPL("Cookies");
 const FilePath::CharType kExtensionsCookieFilename[] = FPL("Extension Cookies");
 const FilePath::CharType kHistoryFilename[] = FPL("History");
diff --git a/chrome/common/chrome_constants.h b/chrome/common/chrome_constants.h
index ea79fd8..4473f32 100644
--- a/chrome/common/chrome_constants.h
+++ b/chrome/common/chrome_constants.h
@@ -40,7 +40,7 @@ extern const FilePath::CharType kMediaCacheDirname[];
 extern const FilePath::CharType kOffTheRecordMediaCacheDirname[];
 extern const FilePath::CharType kAppCacheDirname[];
 extern const wchar_t kChromePluginDataDirname[];
-extern const FilePath::CharType kThemePackFilename[];
+extern const FilePath::CharType kThemeImagesDirname[];
 extern const FilePath::CharType kCookieFilename[];
 extern const FilePath::CharType kExtensionsCookieFilename[];
 extern const FilePath::CharType kHistoryFilename[];
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 6c1edf9..acd77db 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -250,7 +250,6 @@ const wchar_t kPrintingPageFooterRight[] = L"printing.page.footer.right";
 // GTK specific preference on whether we should match the system GTK theme.
 const wchar_t kUsesSystemTheme[] = L"extensions.theme.use_system";
 #endif
-const wchar_t kCurrentThemePackFilename[] = L"extensions.theme.pack";
 const wchar_t kCurrentThemeID[] = L"extensions.theme.id";
 const wchar_t kCurrentThemeImages[] = L"extensions.theme.images";
 const wchar_t kCurrentThemeColors[] = L"extensions.theme.colors";
diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
index 8229a6f..d3095b1 100644
--- a/chrome/common/pref_names.h
+++ b/chrome/common/pref_names.h
@@ -101,7 +101,6 @@ extern const wchar_t kPrintingPageFooterRight[];
 #if defined(OS_LINUX)
 extern const wchar_t kUsesSystemTheme[];
 #endif
-extern const wchar_t kCurrentThemePackFilename[];
 extern const wchar_t kCurrentThemeID[];
 extern const wchar_t kCurrentThemeImages[];
 extern const wchar_t kCurrentThemeColors[];
diff --git a/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_inactive b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_inactive
new file mode 100644
index 0000000..c1099db
--- /dev/null
+++ b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_inactive
diff --git a/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_incognito b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_incognito
new file mode 100644
index 0000000..5d73cfd
--- /dev/null
+++ b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_incognito
diff --git a/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_incognito_inactive b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_incognito_inactive
new file mode 100644
index 0000000..78b69a4
--- /dev/null
+++ b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_incognito_inactive
diff --git a/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_original b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_original
new file mode 100644
index 0000000..fbd9a95
--- /dev/null
+++ b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_frame_original
diff --git a/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_tab_background_incognito b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_tab_background_incognito
new file mode 100644
index 0000000..be17ca5
--- /dev/null
+++ b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_tab_background_incognito
diff --git a/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_tab_background_original b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_tab_background_original
new file mode 100644
index 0000000..90cc6b4
--- /dev/null
+++ b/chrome/test/data/profiles/complex_theme/Default/Cached Theme Images/theme_tab_background_original
diff --git a/chrome/test/data/profiles/complex_theme/Default/Extensions/mblmlcbknbnfebdfjnolmcapmdofhmme/1.1/Cached Theme.pak b/chrome/test/data/profiles/complex_theme/Default/Extensions/mblmlcbknbnfebdfjnolmcapmdofhmme/1.1/Cached Theme.pak
deleted file mode 100644
index 0a76cb9..0000000
--- a/chrome/test/data/profiles/complex_theme/Default/Extensions/mblmlcbknbnfebdfjnolmcapmdofhmme/1.1/Cached Theme.pak
+++ /dev/null
diff --git a/chrome/test/data/profiles/complex_theme/Default/PreferencesTemplate b/chrome/test/data/profiles/complex_theme/Default/PreferencesTemplate
index 7c3eb03..f869914 100644
--- a/chrome/test/data/profiles/complex_theme/Default/PreferencesTemplate
+++ b/chrome/test/data/profiles/complex_theme/Default/PreferencesTemplate
@@ -50,8 +50,39 @@
          }
       },
       "theme": {
+         "colors": {
+            "bookmark_text": [ 0, 0, 0 ],
+            "frame": [ 57, 137, 194 ],
+            "ntp_background": [ 57, 137, 194 ],
+            "ntp_link": [ 0, 0, 0 ],
+            "ntp_section": [ 131, 138, 146, 0.8 ],
+            "ntp_section_link": [ 255, 255, 255 ],
+            "ntp_section_text": [ 255, 255, 255 ],
+            "ntp_text": [ 0, 0, 0 ],
+            "tab_background_text": [ 0, 0, 0 ],
+            "tab_text": [ 0, 0, 0 ],
+            "toolbar": [ 204, 208, 212 ]
+         },
          "id": "mblmlcbknbnfebdfjnolmcapmdofhmme",
-         "pack": "$1/Default/Extensions/mblmlcbknbnfebdfjnolmcapmdofhmme/1.1/Cached Theme.pak"
+         "images": {
+            "theme_button_background": "$1/Default/Extensions/mblmlcbknbnfebdfjnolmcapmdofhmme/1.1/i/agxjaHJvbWV0aGVtZXNyDAsSBEZpbGUYwsgCDA",
+            "theme_frame": "$1/Default/Cached Theme Images/theme_frame_original",
+            "theme_frame_inactive": "$1/Default/Cached Theme Images/theme_frame_inactive",
+            "theme_frame_incognito": "$1/Default/Cached Theme Images/theme_frame_incognito",
+            "theme_frame_incognito_inactive": "$1/Default/Cached Theme Images/theme_frame_incognito_inactive",
+            "theme_ntp_background": "$1/Default/Extensions/mblmlcbknbnfebdfjnolmcapmdofhmme/1.1/i/agxjaHJvbWV0aGVtZXNyDAsSBEZpbGUYj9gCDA",
+            "theme_tab_background": "$1/Default/Cached Theme Images/theme_tab_background_original",
+            "theme_tab_background_incognito": "$1/Default/Cached Theme Images/theme_tab_background_incognito",
+            "theme_toolbar": "$1/Default/Extensions/mblmlcbknbnfebdfjnolmcapmdofhmme/1.1/i/agxjaHJvbWV0aGVtZXNyDAsSBEZpbGUYnMgCDA",
+            "theme_window_control_background": "$1/Default/Extensions/mblmlcbknbnfebdfjnolmcapmdofhmme/1.1/i/agxjaHJvbWV0aGVtZXNyDAsSBEZpbGUYjNgCDA"
+         },
+         "properties": {
+            "ntp_background_alignment": "top",
+            "ntp_background_repeat": "no-repeat"
+         },
+         "tints": {
+            "buttons": [ 0.6, 0.553, 0.5 ]
+         }
       }
    },
    "profile": {