[content shell] move code common to several processes to a common dir

BUG=180021
TBR=marja@chromium.org

Review URL: https://codereview.chromium.org/14767019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@198723 0039d316-1c4b-4281-b951-d872f2087c98

10 files changed, 587 insertions, 0 deletions

diff --git a/content/shell/common/shell_content_client.cc b/content/shell/common/shell_content_client.cc
new file mode 100644
index 0000000..6b9a9bf
--- /dev/null
+++ b/content/shell/common/shell_content_client.cc
@@ -0,0 +1,109 @@
+// Copyright (c) 2012 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 "content/shell/common/shell_content_client.h"
+
+#include "base/command_line.h"
+#include "base/strings/string_piece.h"
+#include "base/utf_string_conversions.h"
+#include "content/public/common/content_switches.h"
+#include "content/shell/common/shell_switches.h"
+#include "grit/shell_resources.h"
+#include "grit/webkit_resources.h"
+#include "grit/webkit_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "webkit/user_agent/user_agent_util.h"
+
+namespace content {
+
+ShellContentClient::~ShellContentClient() {
+}
+
+std::string ShellContentClient::GetUserAgent() const {
+  std::string product = "Chrome/" CONTENT_SHELL_VERSION;
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kUseMobileUserAgent))
+    product += " Mobile";
+  return webkit_glue::BuildUserAgentFromProduct(product);
+}
+
+string16 ShellContentClient::GetLocalizedString(int message_id) const {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree)) {
+    switch (message_id) {
+      case IDS_FORM_VALIDATION_VALUE_MISSING:
+      case IDS_FORM_VALIDATION_VALUE_MISSING_CHECKBOX:
+      case IDS_FORM_VALIDATION_VALUE_MISSING_FILE:
+      case IDS_FORM_VALIDATION_VALUE_MISSING_MULTIPLE_FILE:
+      case IDS_FORM_VALIDATION_VALUE_MISSING_RADIO:
+      case IDS_FORM_VALIDATION_VALUE_MISSING_SELECT:
+        return ASCIIToUTF16("value missing");
+      case IDS_FORM_VALIDATION_TYPE_MISMATCH:
+      case IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL:
+      case IDS_FORM_VALIDATION_TYPE_MISMATCH_MULTIPLE_EMAIL:
+      case IDS_FORM_VALIDATION_TYPE_MISMATCH_URL:
+        return ASCIIToUTF16("type mismatch");
+      case IDS_FORM_VALIDATION_PATTERN_MISMATCH:
+        return ASCIIToUTF16("pattern mismatch");
+      case IDS_FORM_VALIDATION_TOO_LONG:
+        return ASCIIToUTF16("too long");
+      case IDS_FORM_VALIDATION_RANGE_UNDERFLOW:
+        return ASCIIToUTF16("range underflow");
+      case IDS_FORM_VALIDATION_RANGE_OVERFLOW:
+        return ASCIIToUTF16("range overflow");
+      case IDS_FORM_VALIDATION_STEP_MISMATCH:
+        return ASCIIToUTF16("step mismatch");
+      case IDS_FORM_OTHER_DATE_LABEL:
+        return ASCIIToUTF16("<<OtherDateLabel>>");
+      case IDS_FORM_OTHER_MONTH_LABEL:
+        return ASCIIToUTF16("<<OtherMonthLabel>>");
+      case IDS_FORM_OTHER_TIME_LABEL:
+        return ASCIIToUTF16("<<OtherTimeLabel>>");
+      case IDS_FORM_OTHER_WEEK_LABEL:
+        return ASCIIToUTF16("<<OtherWeekLabel>>");
+      case IDS_FORM_CALENDAR_CLEAR:
+        return ASCIIToUTF16("<<CalendarClear>>");
+      case IDS_FORM_CALENDAR_TODAY:
+        return ASCIIToUTF16("<<CalendarToday>>");
+      case IDS_FORM_THIS_MONTH_LABEL:
+        return ASCIIToUTF16("<<ThisMonthLabel>>");
+      case IDS_FORM_THIS_WEEK_LABEL:
+        return ASCIIToUTF16("<<ThisWeekLabel>>");
+    }
+  }
+  return l10n_util::GetStringUTF16(message_id);
+}
+
+base::StringPiece ShellContentClient::GetDataResource(
+    int resource_id,
+    ui::ScaleFactor scale_factor) const {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree)) {
+    switch (resource_id) {
+      case IDR_BROKENIMAGE:
+#if defined(OS_MACOSX)
+        resource_id = IDR_CONTENT_SHELL_MISSING_IMAGE_PNG;
+#else
+        resource_id = IDR_CONTENT_SHELL_MISSING_IMAGE_GIF;
+#endif
+        break;
+
+      case IDR_TEXTAREA_RESIZER:
+        resource_id = IDR_CONTENT_SHELL_TEXT_AREA_RESIZE_CORNER_PNG;
+        break;
+    }
+  }
+  return ResourceBundle::GetSharedInstance().GetRawDataResourceForScale(
+      resource_id, scale_factor);
+}
+
+base::RefCountedStaticMemory* ShellContentClient::GetDataResourceBytes(
+    int resource_id) const {
+  return ResourceBundle::GetSharedInstance().LoadDataResourceBytes(resource_id);
+}
+
+gfx::Image& ShellContentClient::GetNativeImageNamed(int resource_id) const {
+  return ResourceBundle::GetSharedInstance().GetNativeImageNamed(resource_id);
+}
+
+}  // namespace content
diff --git a/content/shell/common/shell_content_client.h b/content/shell/common/shell_content_client.h
new file mode 100644
index 0000000..84a1483
--- /dev/null
+++ b/content/shell/common/shell_content_client.h
@@ -0,0 +1,32 @@
+// Copyright (c) 2012 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 CONTENT_SHELL_COMMON_SHELL_CONTENT_CLIENT_H_
+#define CONTENT_SHELL_COMMON_SHELL_CONTENT_CLIENT_H_
+
+#include <string>
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "content/public/common/content_client.h"
+
+namespace content {
+
+class ShellContentClient : public ContentClient {
+ public:
+  virtual ~ShellContentClient();
+
+  virtual std::string GetUserAgent() const OVERRIDE;
+  virtual string16 GetLocalizedString(int message_id) const OVERRIDE;
+  virtual base::StringPiece GetDataResource(
+      int resource_id,
+      ui::ScaleFactor scale_factor) const OVERRIDE;
+  virtual base::RefCountedStaticMemory* GetDataResourceBytes(
+      int resource_id) const OVERRIDE;
+  virtual gfx::Image& GetNativeImageNamed(int resource_id) const OVERRIDE;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_SHELL_COMMON_SHELL_CONTENT_CLIENT_H_
diff --git a/content/shell/common/shell_messages.cc b/content/shell/common/shell_messages.cc
new file mode 100644
index 0000000..3eae912
--- /dev/null
+++ b/content/shell/common/shell_messages.cc
@@ -0,0 +1,33 @@
+// Copyright (c) 2012 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.
+
+// Get basic type definitions.
+#define IPC_MESSAGE_IMPL
+#include "content/shell/common/shell_messages.h"
+
+// Generate constructors.
+#include "ipc/struct_constructor_macros.h"
+#include "content/shell/common/shell_messages.h"
+
+// Generate destructors.
+#include "ipc/struct_destructor_macros.h"
+#include "content/shell/common/shell_messages.h"
+
+// Generate param traits write methods.
+#include "ipc/param_traits_write_macros.h"
+namespace IPC {
+#include "content/shell/common/shell_messages.h"
+}  // namespace IPC
+
+// Generate param traits read methods.
+#include "ipc/param_traits_read_macros.h"
+namespace IPC {
+#include "content/shell/common/shell_messages.h"
+}  // namespace IPC
+
+// Generate param traits log methods.
+#include "ipc/param_traits_log_macros.h"
+namespace IPC {
+#include "content/shell/common/shell_messages.h"
+}  // namespace IPC
diff --git a/content/shell/common/shell_messages.h b/content/shell/common/shell_messages.h
new file mode 100644
index 0000000..fb10973
--- /dev/null
+++ b/content/shell/common/shell_messages.h
@@ -0,0 +1,103 @@
+// Copyright (c) 2012 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.
+
+// Multiply-included file, no traditional include guard.
+#include <string>
+#include <vector>
+
+#include "content/public/common/common_param_traits.h"
+#include "content/shell/common/shell_test_configuration.h"
+#include "ipc/ipc_message_macros.h"
+#include "ipc/ipc_platform_file.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+
+#define IPC_MESSAGE_START ShellMsgStart
+
+IPC_STRUCT_TRAITS_BEGIN(content::ShellTestConfiguration)
+IPC_STRUCT_TRAITS_MEMBER(current_working_directory)
+IPC_STRUCT_TRAITS_MEMBER(temp_path)
+IPC_STRUCT_TRAITS_MEMBER(test_url)
+IPC_STRUCT_TRAITS_MEMBER(enable_pixel_dumping)
+IPC_STRUCT_TRAITS_MEMBER(layout_test_timeout)
+IPC_STRUCT_TRAITS_MEMBER(allow_external_pages)
+IPC_STRUCT_TRAITS_MEMBER(expected_pixel_hash)
+IPC_STRUCT_TRAITS_END()
+
+// Tells the renderer to reset all test runners.
+IPC_MESSAGE_ROUTED0(ShellViewMsg_Reset)
+
+// Sets the path to the WebKit checkout.
+IPC_MESSAGE_CONTROL1(ShellViewMsg_SetWebKitSourceDir,
+                     base::FilePath /* webkit source dir */)
+
+// Loads the hyphen dictionary used for layout tests.
+IPC_MESSAGE_CONTROL1(ShellViewMsg_LoadHyphenDictionary,
+                     IPC::PlatformFileForTransit /* dict_file */)
+
+// Sets the initial configuration to use for layout tests.
+IPC_MESSAGE_ROUTED1(ShellViewMsg_SetTestConfiguration,
+                    content::ShellTestConfiguration)
+
+// Tells the main window that a secondary window in a different process invoked
+// notifyDone().
+IPC_MESSAGE_ROUTED0(ShellViewMsg_NotifyDone)
+
+// Pushes a snapshot of the current session history from the browser process.
+// This includes only information about those RenderViews that are in the
+// same process as the main window of the layout test and that are the current
+// active RenderView of their WebContents.
+IPC_MESSAGE_ROUTED3(
+    ShellViewMsg_SessionHistory,
+    std::vector<int> /* routing_ids */,
+    std::vector<std::vector<std::string> > /* session_histories */,
+    std::vector<unsigned> /* current_entry_indexes */)
+
+// Send a text dump of the WebContents to the render host.
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_TextDump,
+                    std::string /* dump */)
+
+// Send an image dump of the WebContents to the render host.
+IPC_MESSAGE_ROUTED2(ShellViewHostMsg_ImageDump,
+                    std::string /* actual pixel hash */,
+                    SkBitmap /* image */)
+
+// Send an audio dump to the render host.
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_AudioDump,
+                    std::vector<unsigned char> /* audio data */)
+
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_TestFinished,
+                    bool /* did_timeout */)
+
+IPC_MESSAGE_ROUTED0(ShellViewHostMsg_ResetDone)
+
+IPC_MESSAGE_ROUTED0(ShellViewHostMsg_TestFinishedInSecondaryWindow)
+
+// WebTestDelegate related.
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_OverridePreferences,
+                    WebPreferences /* preferences */)
+IPC_SYNC_MESSAGE_ROUTED1_1(ShellViewHostMsg_RegisterIsolatedFileSystem,
+                           std::vector<base::FilePath> /* absolute_filenames */,
+                           std::string /* filesystem_id */)
+IPC_SYNC_MESSAGE_ROUTED1_1(ShellViewHostMsg_ReadFileToString,
+                           base::FilePath /* local path */,
+                           std::string /* contents */)
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_PrintMessage,
+                    std::string /* message */)
+IPC_MESSAGE_ROUTED0(ShellViewHostMsg_ShowDevTools)
+IPC_MESSAGE_ROUTED0(ShellViewHostMsg_CloseDevTools)
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_GoToOffset,
+                    int /* offset */)
+IPC_MESSAGE_ROUTED0(ShellViewHostMsg_Reload)
+IPC_MESSAGE_ROUTED2(ShellViewHostMsg_LoadURLForFrame,
+                    GURL /* url */,
+                    std::string /* frame_name */)
+IPC_MESSAGE_ROUTED0(ShellViewHostMsg_ClearAllDatabases)
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_SetDatabaseQuota,
+                    int /* quota */)
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_AcceptAllCookies,
+                    bool /* accept */)
+IPC_MESSAGE_ROUTED1(ShellViewHostMsg_SetDeviceScaleFactor,
+                    float /* factor */)
+IPC_MESSAGE_ROUTED0(ShellViewHostMsg_CaptureSessionHistory)
+IPC_MESSAGE_ROUTED0(ShellViewHostMsg_CloseRemainingWindows)
diff --git a/content/shell/common/shell_switches.cc b/content/shell/common/shell_switches.cc
new file mode 100644
index 0000000..6cc052a
--- /dev/null
+++ b/content/shell/common/shell_switches.cc
@@ -0,0 +1,40 @@
+// Copyright (c) 2012 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 "content/shell/common/shell_switches.h"
+
+namespace switches {
+
+// Allow access to external pages during layout tests.
+const char kAllowExternalPages[] = "allow-external-pages";
+
+// Check whether all system dependencies for running layout tests are met.
+const char kCheckLayoutTestSysDeps[] = "check-layout-test-sys-deps";
+
+// Tells Content Shell that it's running as a content_browsertest.
+const char kContentBrowserTest[] = "browser-test";
+
+// Makes Content Shell use the given path for its data directory.
+const char kContentShellDataPath[] = "data-path";
+
+// Show the content_shell window, even when running in layout test mode.
+const char kDisableHeadlessForLayoutTests[] =
+    "disable-headless-for-layout-tests";
+
+// Request pages to be dumped as text once they finished loading.
+const char kDumpRenderTree[] = "dump-render-tree";
+
+// Enable accelerated 2D canvas.
+const char kEnableAccelerated2DCanvas[] = "enable-accelerated-2d-canvas";
+
+// Alias for kEnableSoftwareCompositingGLAdapter.
+const char kEnableSoftwareCompositing[] = "enable-software-compositing";
+
+// Disables the timeout for layout tests.
+const char kNoTimeout[] = "no-timeout";
+
+// Save results when layout-as-browser tests fail.
+const char kOutputLayoutTestDifferences[] = "output-layout-test-differences";
+
+}  // namespace switches
diff --git a/content/shell/common/shell_switches.h b/content/shell/common/shell_switches.h
new file mode 100644
index 0000000..5a182c5
--- /dev/null
+++ b/content/shell/common/shell_switches.h
@@ -0,0 +1,25 @@
+// Copyright (c) 2012 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.
+
+// Defines all the "content_shell" command-line switches.
+
+#ifndef CONTENT_SHELL_COMMON_SHELL_SWITCHES_H_
+#define CONTENT_SHELL_COMMON_SHELL_SWITCHES_H_
+
+namespace switches {
+
+extern const char kAllowExternalPages[];
+extern const char kCheckLayoutTestSysDeps[];
+extern const char kContentBrowserTest[];
+extern const char kContentShellDataPath[];
+extern const char kDisableHeadlessForLayoutTests[];
+extern const char kDumpRenderTree[];
+extern const char kEnableAccelerated2DCanvas[];
+extern const char kEnableSoftwareCompositing[];
+extern const char kNoTimeout[];
+extern const char kOutputLayoutTestDifferences[];
+
+}  // namespace switches
+
+#endif  // CONTENT_SHELL_COMMON_SHELL_SWITCHES_H_
diff --git a/content/shell/common/shell_test_configuration.cc b/content/shell/common/shell_test_configuration.cc
new file mode 100644
index 0000000..43f2651
--- /dev/null
+++ b/content/shell/common/shell_test_configuration.cc
@@ -0,0 +1,16 @@
+// Copyright (c) 2013 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 "content/shell/common/shell_test_configuration.h"
+
+namespace content {
+
+ShellTestConfiguration::ShellTestConfiguration()
+    : enable_pixel_dumping(true),
+      layout_test_timeout(30 * 1000),
+      allow_external_pages(false) {}
+
+ShellTestConfiguration::~ShellTestConfiguration() {}
+
+}  // namespace content
diff --git a/content/shell/common/shell_test_configuration.h b/content/shell/common/shell_test_configuration.h
new file mode 100644
index 0000000..f24033c
--- /dev/null
+++ b/content/shell/common/shell_test_configuration.h
@@ -0,0 +1,43 @@
+// Copyright (c) 2013 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 CONTENT_SHELL_COMMON_SHELL_TEST_CONFIGURATION_H_
+#define CONTENT_SHELL_COMMON_SHELL_TEST_CONFIGURATION_H_
+
+#include <string>
+
+#include "base/files/file_path.h"
+#include "googleurl/src/gurl.h"
+
+namespace content {
+
+struct ShellTestConfiguration {
+  ShellTestConfiguration();
+  ~ShellTestConfiguration();
+
+  // The current working directory.
+  base::FilePath current_working_directory;
+
+  // The temporary directory of the system.
+  base::FilePath temp_path;
+
+  // The URL of the current layout test.
+  GURL test_url;
+
+  // True if pixel tests are enabled.
+  bool enable_pixel_dumping;
+
+  // The layout test timeout in milliseconds.
+  int layout_test_timeout;
+
+  // True if tests can open external URLs
+  bool allow_external_pages;
+
+  // The expected MD5 hash of the pixel results.
+  std::string expected_pixel_hash;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_SHELL_COMMON_SHELL_TEST_CONFIGURATION_H_
diff --git a/content/shell/common/webkit_test_helpers.cc b/content/shell/common/webkit_test_helpers.cc
new file mode 100644
index 0000000..1993e5d
--- /dev/null
+++ b/content/shell/common/webkit_test_helpers.cc
@@ -0,0 +1,146 @@
+// Copyright (c) 2012 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 "content/shell/common/webkit_test_helpers.h"
+
+#include "base/command_line.h"
+#include "base/file_util.h"
+#include "base/path_service.h"
+#include "base/utf_string_conversions.h"
+#include "content/shell/common/shell_switches.h"
+#include "third_party/WebKit/Tools/DumpRenderTree/chromium/TestRunner/public/WebPreferences.h"
+#include "webkit/glue/webpreferences.h"
+
+namespace content {
+
+void ExportLayoutTestSpecificPreferences(
+    const WebTestRunner::WebPreferences& from,
+    WebPreferences* to) {
+  to->allow_universal_access_from_file_urls =
+      from.allowUniversalAccessFromFileURLs;
+  to->dom_paste_enabled = from.DOMPasteAllowed;
+  to->javascript_can_access_clipboard = from.javaScriptCanAccessClipboard;
+  to->xss_auditor_enabled = from.XSSAuditorEnabled;
+  to->editing_behavior = static_cast<webkit_glue::EditingBehavior>(
+      from.editingBehavior);
+  to->default_font_size = from.defaultFontSize;
+  to->minimum_font_size = from.minimumFontSize;
+  to->default_encoding = from.defaultTextEncodingName.utf8().data();
+  to->javascript_enabled = from.javaScriptEnabled;
+  to->supports_multiple_windows = from.supportsMultipleWindows;
+  to->loads_images_automatically = from.loadsImagesAutomatically;
+  to->plugins_enabled = from.pluginsEnabled;
+  to->java_enabled = from.javaEnabled;
+  to->application_cache_enabled = from.offlineWebApplicationCacheEnabled;
+  to->tabs_to_links = from.tabsToLinks;
+  to->experimental_webgl_enabled = from.experimentalWebGLEnabled;
+  to->css_grid_layout_enabled = from.experimentalCSSGridLayoutEnabled;
+  // experimentalCSSRegionsEnabled is deprecated and ignored.
+  to->hyperlink_auditing_enabled = from.hyperlinkAuditingEnabled;
+  to->caret_browsing_enabled = from.caretBrowsingEnabled;
+  to->allow_displaying_insecure_content = from.allowDisplayOfInsecureContent;
+  to->allow_running_insecure_content = from.allowRunningOfInsecureContent;
+  to->css_shaders_enabled = from.cssCustomFilterEnabled;
+  to->should_respect_image_orientation = from.shouldRespectImageOrientation;
+  to->asynchronous_spell_checking_enabled =
+      from.asynchronousSpellCheckingEnabled;
+  to->allow_file_access_from_file_urls = from.allowFileAccessFromFileURLs;
+  to->author_and_user_styles_enabled = from.authorAndUserStylesEnabled;
+  to->javascript_can_open_windows_automatically =
+      from.javaScriptCanOpenWindowsAutomatically;
+  to->user_style_sheet_location = from.userStyleSheetLocation;
+  to->touch_drag_drop_enabled = from.touchDragDropEnabled;
+}
+
+// Applies settings that differ between layout tests and regular mode. Some
+// of the defaults are controlled via command line flags which are
+// automatically set for layout tests.
+void ApplyLayoutTestDefaultPreferences(WebPreferences* prefs) {
+  CommandLine& command_line = *CommandLine::ForCurrentProcess();
+  prefs->allow_universal_access_from_file_urls = true;
+  prefs->dom_paste_enabled = true;
+  prefs->javascript_can_access_clipboard = true;
+  prefs->xss_auditor_enabled = false;
+#if defined(OS_MACOSX)
+  prefs->editing_behavior = webkit_glue::EDITING_BEHAVIOR_MAC;
+#else
+  prefs->editing_behavior = webkit_glue::EDITING_BEHAVIOR_WIN;
+#endif
+  prefs->java_enabled = false;
+  prefs->application_cache_enabled = true;
+  prefs->tabs_to_links = false;
+  prefs->hyperlink_auditing_enabled = false;
+  prefs->allow_displaying_insecure_content = true;
+  prefs->allow_running_insecure_content = true;
+  prefs->webgl_errors_to_console_enabled = false;
+  string16 serif;
+#if defined(OS_MACOSX)
+  prefs->cursive_font_family_map[webkit_glue::kCommonScript] =
+      ASCIIToUTF16("Apple Chancery");
+  prefs->fantasy_font_family_map[webkit_glue::kCommonScript] =
+      ASCIIToUTF16("Papyrus");
+  serif = ASCIIToUTF16("Times");
+#else
+  prefs->cursive_font_family_map[webkit_glue::kCommonScript] =
+      ASCIIToUTF16("Comic Sans MS");
+  prefs->fantasy_font_family_map[webkit_glue::kCommonScript] =
+      ASCIIToUTF16("Impact");
+  serif = ASCIIToUTF16("times new roman");
+#endif
+  prefs->serif_font_family_map[webkit_glue::kCommonScript] =
+      serif;
+  prefs->standard_font_family_map[webkit_glue::kCommonScript] =
+      serif;
+  prefs->fixed_font_family_map[webkit_glue::kCommonScript] =
+      ASCIIToUTF16("Courier");
+  prefs->sans_serif_font_family_map[
+      webkit_glue::kCommonScript] = ASCIIToUTF16("Helvetica");
+  prefs->minimum_logical_font_size = 9;
+  prefs->asynchronous_spell_checking_enabled = false;
+  prefs->user_style_sheet_enabled = true;
+  prefs->threaded_html_parser = true;
+  prefs->accelerated_2d_canvas_enabled =
+      command_line.HasSwitch(switches::kEnableAccelerated2DCanvas);
+  prefs->accelerated_compositing_for_video_enabled = false;
+  prefs->mock_scrollbars_enabled = false;
+  prefs->fixed_position_creates_stacking_context = false;
+  prefs->apply_page_scale_factor_in_compositor = false;
+  prefs->smart_insert_delete_enabled = true;
+  prefs->minimum_accelerated_2d_canvas_size = 0;
+}
+
+base::FilePath GetWebKitRootDirFilePath() {
+  base::FilePath base_path;
+  PathService::Get(base::DIR_SOURCE_ROOT, &base_path);
+  if (file_util::PathExists(
+          base_path.Append(FILE_PATH_LITERAL("third_party/WebKit")))) {
+    // We're in a WebKit-in-chrome checkout.
+    return base_path.Append(FILE_PATH_LITERAL("third_party/WebKit"));
+  } else if (file_util::PathExists(
+          base_path.Append(FILE_PATH_LITERAL("chromium")))) {
+    // We're in a WebKit-only checkout on Windows.
+    return base_path.Append(FILE_PATH_LITERAL("../.."));
+  } else if (file_util::PathExists(
+          base_path.Append(FILE_PATH_LITERAL("webkit/support")))) {
+    // We're in a WebKit-only/xcodebuild checkout on Mac
+    return base_path.Append(FILE_PATH_LITERAL("../../.."));
+  }
+  // We're in a WebKit-only, make-build, so the DIR_SOURCE_ROOT is already the
+  // WebKit root. That, or we have no idea where we are.
+  return base_path;
+}
+
+base::FilePath GetChromiumRootDirFilePath() {
+  base::FilePath webkit_path = GetWebKitRootDirFilePath();
+  if (file_util::PathExists(webkit_path.Append(
+          FILE_PATH_LITERAL("Source/WebKit/chromium/webkit/support")))) {
+    // We're in a WebKit-only checkout.
+    return webkit_path.Append(FILE_PATH_LITERAL("Source/WebKit/chromium"));
+  } else {
+    // We're in a Chromium checkout, and WebKit is in third_party/WebKit.
+    return webkit_path.Append(FILE_PATH_LITERAL("../.."));
+  }
+}
+
+}  // namespace content
diff --git a/content/shell/common/webkit_test_helpers.h b/content/shell/common/webkit_test_helpers.h
new file mode 100644
index 0000000..a171f2e
--- /dev/null
+++ b/content/shell/common/webkit_test_helpers.h
@@ -0,0 +1,40 @@
+// Copyright (c) 2012 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 CONTENT_SHELL_COMMON_WEBKIT_TEST_HELPERS_H_
+#define CONTENT_SHELL_COMMON_WEBKIT_TEST_HELPERS_H_
+
+struct WebPreferences;
+
+namespace WebTestRunner {
+struct WebPreferences;
+}
+
+namespace base {
+class FilePath;
+}
+
+struct WebPreferences;
+
+namespace content {
+
+// The TestRunner library keeps its settings in a WebTestRunner::WebPreferenes
+// object. The content_shell, however, uses WebPreferences. This
+// method exports the settings from the WebTestRunner library which are relevant
+// for layout tests.
+void ExportLayoutTestSpecificPreferences(
+    const WebTestRunner::WebPreferences& from, WebPreferences* to);
+
+// Applies settings that differ between layout tests and regular mode.
+void ApplyLayoutTestDefaultPreferences(WebPreferences* prefs);
+
+// Returns the root of the Blink checkout.
+base::FilePath GetWebKitRootDirFilePath();
+
+// Returns the root of the chromium checkout.
+base::FilePath GetChromiumRootDirFilePath();
+
+}  // namespace content
+
+#endif  // CONTENT_SHELL_COMMON_WEBKIT_TEST_HELPERS_H_