Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 645 insertions, 0 deletions

diff --git a/chrome/browser/browser_about_handler.cc b/chrome/browser/browser_about_handler.cc
new file mode 100644
index 0000000..fca4e8d
--- /dev/null
+++ b/chrome/browser/browser_about_handler.cc
@@ -0,0 +1,645 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "chrome/browser/browser_about_handler.h"
+
+#include <string>
+#include <vector>
+
+#include "base/file_version_info.h"
+#include "base/histogram.h"
+#include "base/image_util.h"
+#include "base/process_util.h"
+#include "base/stats_table.h"
+#include "base/string_piece.h"
+#include "base/string_util.h"
+#include "base/tracked_objects.h"
+#include "chrome/browser/browser.h"
+#include "chrome/browser/browser_list.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/browser_resources.h"
+#include "chrome/browser/dom_ui/chrome_url_data_manager.h"
+#include "chrome/browser/ipc_status_view.h"
+#include "chrome/browser/memory_details.h"
+#include "chrome/browser/net/dns_global.h"
+#include "chrome/browser/plugin_process_host.h"
+#include "chrome/browser/plugin_service.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/profile_manager.h"
+#include "chrome/browser/render_process_host.h"
+#include "chrome/browser/render_view_host.h"
+#include "chrome/common/jstemplate_builder.h"
+#include "chrome/common/l10n_util.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/common/pref_service.h"
+#include "chrome/common/resource_bundle.h"
+#include "chrome/renderer/about_handler.h"
+#include "googleurl/src/gurl.h"
+#include "webkit/glue/webkit_glue.h"
+
+#include "generated_resources.h"
+
+// The URL scheme used for the about ui.
+static const char kAboutScheme[] = "about";
+
+// The paths used for the about pages.
+static const char kCachePath[] = "cache";
+static const char kDnsPath[] = "dns";
+static const char kHistogramsPath[] = "histograms";
+static const char kObjectsPath[] = "objects";
+static const char kMemoryPath[] = "memory";
+static const char kPluginsPath[] = "plugins";
+static const char kStatsPath[] = "stats";
+static const char kVersionPath[] = "version";
+
+class AboutSource : public ChromeURLDataManager::DataSource {
+ public:
+  // Creates our datasource.
+  AboutSource();
+  virtual ~AboutSource();
+
+  // Called when the network layer has requested a resource underneath
+  // the path we registered.
+  virtual void StartDataRequest(const std::string& path, int request_id);
+
+  // Send the response data.
+  void FinishDataRequest(const std::string& html, int request_id);
+
+ private:
+  DISALLOW_EVIL_CONSTRUCTORS(AboutSource);
+};
+
+// Handling about:memory is complicated enough to encapsulate it's
+// related methods into a single class.
+class AboutMemoryHandler : public MemoryDetails {
+ public:
+  AboutMemoryHandler(AboutSource* source, int request_id);
+
+  virtual void OnDetailsAvailable();
+
+ private:
+  void BindProcessMetrics(DictionaryValue* data,
+                          ProcessMemoryInformation* info);
+  void GetTabContentsTitles(RenderProcessHost* rph, ListValue* titles);
+  void AppendProcess(ListValue* renderers, ProcessMemoryInformation* info);
+  void FinishAboutMemory();
+
+  AboutSource* source_;
+  int request_id_;
+  DISALLOW_EVIL_CONSTRUCTORS(AboutMemoryHandler);
+};
+
+AboutSource::AboutSource()
+    : DataSource(kAboutScheme, MessageLoop::current()) {
+}
+
+AboutSource::~AboutSource() {
+}
+
+void AboutSource::StartDataRequest(const std::string& path_raw,
+                                   int request_id) {
+  std::string path = path_raw;
+  std::string info;
+  if (path.find("/") != -1) {
+    size_t pos = path.find("/");
+    info = path.substr(pos + 1, path.length() - (pos + 1));
+    path = path.substr(0, pos);
+  }
+  path = StringToLowerASCII(path);
+
+  std::string response;
+  if (path == kDnsPath) {
+    response = BrowserAboutHandler::AboutDns();
+  } else if (path == kHistogramsPath) {
+    response = BrowserAboutHandler::AboutHistograms(info);
+  } else if (path == kMemoryPath) {
+    BrowserAboutHandler::AboutMemory(this, request_id);
+    return;
+  } else if (path == kObjectsPath) {
+    response = BrowserAboutHandler::AboutObjects(info);
+  } else if (path == kPluginsPath) {
+    response = BrowserAboutHandler::AboutPlugins();
+  } else if (path == kStatsPath) {
+    response = BrowserAboutHandler::AboutStats();
+  } else if (path == kVersionPath || path.empty()) {
+    response = BrowserAboutHandler::AboutVersion();
+  }
+  FinishDataRequest(response, request_id);
+}
+
+void AboutSource::FinishDataRequest(const std::string& response,
+                                    int request_id) {
+  scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
+  html_bytes->data.resize(response.size());
+  std::copy(response.begin(), response.end(), html_bytes->data.begin());
+  SendResponse(request_id, html_bytes);
+}
+
+// This is the top-level URL handler for chrome-internal: URLs, and exposed in
+// our header file.
+bool BrowserAboutHandler::MaybeHandle(GURL* url,
+                                      TabContentsType* result_type) {
+  if (!url->SchemeIs(kAboutScheme))
+    return false;
+
+  // about:blank is special.  Frames are allowed to access about:blank,
+  // but they are not allowed to access other types of about pages.
+  // Just ignore the about:blank and let the TAB_CONTENTS_WEB handle it.
+  if (StringToLowerASCII(url->path()) == "blank") {
+    return false;
+  }
+
+  // We create an about:cache mapping to the view-cache: internal URL.
+  if (StringToLowerASCII(url->path()) == kCachePath) {
+    *url = GURL("view-cache:");
+    *result_type = TAB_CONTENTS_WEB;
+    return true;
+  }
+
+  if (LowerCaseEqualsASCII(url->path(), "network")) {
+    // about:network doesn't have an internal protocol, so don't modify |url|.
+    *result_type = TAB_CONTENTS_NETWORK_STATUS_VIEW;
+    return true;
+  }
+
+#ifdef IPC_MESSAGE_LOG_ENABLED
+  if ((LowerCaseEqualsASCII(url->path(), "ipc")) &&
+      (IPCStatusView::current() == NULL)) {
+    // about:ipc doesn't have an internal protocol, so don't modify |url|.
+    *result_type = TAB_CONTENTS_IPC_STATUS_VIEW;
+    return true;
+  }
+#endif
+
+  if (LowerCaseEqualsASCII(url->path(), "internets")) {
+    // about:internets doesn't have an internal protocol, so don't modify |url|.
+    *result_type = TAB_CONTENTS_ABOUT_INTERNETS_STATUS_VIEW;
+    return true;
+  }
+
+  // There are a few about URLs that we hand over to the renderer.
+  // If the renderer wants them, let it have them.
+  if (AboutHandler::WillHandle(*url))
+    return false;
+
+  *result_type = TAB_CONTENTS_ABOUT_UI;
+  std::string about_url = "chrome-resource://about/";
+  about_url.append(url->path());
+  *url = GURL(about_url);
+  return true;
+}
+
+BrowserAboutHandler::BrowserAboutHandler(Profile* profile,
+                           SiteInstance* instance,
+                           RenderViewHostFactory* render_view_factory) :
+  WebContents(profile, instance, render_view_factory, MSG_ROUTING_NONE, NULL) {
+  type_ = TAB_CONTENTS_ABOUT_UI;
+
+  // We only need to register the AboutSource once and it is
+  // kept globally.  There is currently no way to remove a data source.
+  static bool initialized = false;
+  if (!initialized) {
+    about_source_ = new AboutSource();
+    g_browser_process->io_thread()->message_loop()->PostTask(FROM_HERE,
+        NewRunnableMethod(&chrome_url_data_manager,
+            &ChromeURLDataManager::AddDataSource,
+            about_source_));
+    initialized = true;
+  }
+}
+
+bool BrowserAboutHandler::SupportsURL(GURL* url) {
+  // Enable this tab contents to access javascript urls.
+  if (url->SchemeIs("javascript"))
+    return true;
+  return WebContents::SupportsURL(url);
+}
+
+
+// static
+std::string BrowserAboutHandler::AboutVersion() {
+  // Strings used in the JsTemplate file.
+  DictionaryValue localized_strings;
+  localized_strings.SetString(L"title",
+      l10n_util::GetString(IDS_ABOUT_VERSION_TITLE));
+  scoped_ptr<FileVersionInfo> version_info(
+      FileVersionInfo::CreateFileVersionInfoForCurrentModule());
+  if (version_info == NULL) {
+    DLOG(ERROR) << "Unable to create FileVersionInfo object";
+    return std::string();
+  }
+  localized_strings.SetString(L"name",
+      l10n_util::GetString(IDS_PRODUCT_NAME));
+  localized_strings.SetString(L"version", version_info->file_version());
+  localized_strings.SetString(L"company",
+      l10n_util::GetString(IDS_ABOUT_VERSION_COMPANY_NAME));
+  localized_strings.SetString(L"copyright",
+      l10n_util::GetString(IDS_ABOUT_VERSION_COPYRIGHT));
+  localized_strings.SetString(L"cl", version_info->last_change());
+  if (version_info->is_official_build()) {
+    localized_strings.SetString(L"official",
+      l10n_util::GetString(IDS_ABOUT_VERSION_OFFICIAL));
+  } else {
+    localized_strings.SetString(L"official",
+      l10n_util::GetString(IDS_ABOUT_VERSION_UNOFFICIAL));
+  }
+  localized_strings.SetString(L"useragent",
+      UTF8ToWide(webkit_glue::GetDefaultUserAgent()));
+
+  static const StringPiece version_html(
+      ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_ABOUT_VERSION_HTML));
+
+  return jstemplate_builder::GetTemplateHtml(
+      version_html, &localized_strings, "t" /* template root node id */);
+}
+
+// static
+std::string BrowserAboutHandler::AboutPlugins() {
+  // Strings used in the JsTemplate file.
+  DictionaryValue localized_strings;
+  localized_strings.SetString(L"title",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_TITLE));
+  localized_strings.SetString(L"headingPlugs",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_HEADING_PLUGS));
+  localized_strings.SetString(L"headingNoPlugs",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_HEADING_NOPLUGS));
+  localized_strings.SetString(L"filename",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_FILENAME_LABEL));
+  localized_strings.SetString(L"mimetype",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_MIMETYPE_LABEL));
+  localized_strings.SetString(L"description",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_DESCRIPTION_LABEL));
+  localized_strings.SetString(L"suffixes",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_SUFFIX_LABEL));
+  localized_strings.SetString(L"enabled",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_ENABLED_LABEL));
+  localized_strings.SetString(L"enabled_yes",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_ENABLED_YES));
+  localized_strings.SetString(L"enabled_no",
+      l10n_util::GetString(IDS_ABOUT_PLUGINS_ENABLED_NO));
+
+  static const StringPiece plugins_html(
+      ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_ABOUT_PLUGINS_HTML));
+
+  return jstemplate_builder::GetTemplateHtml(
+      plugins_html, &localized_strings, "t" /* template root node id */);
+}
+
+// static
+std::string BrowserAboutHandler::AboutHistograms(const std::string query) {
+  std::string data;
+  StatisticsRecorder::WriteHTMLGraph(query, &data);
+  return data;
+}
+
+// static
+std::string BrowserAboutHandler::AboutObjects(const std::string& query) {
+  std::string data;
+  tracked_objects::ThreadData::WriteHTML(query, &data);
+  return data;
+}
+
+// static
+std::string BrowserAboutHandler::AboutDns() {
+  std::string data;
+  chrome_browser_net::DnsPrefetchGetHtmlInfo(&data);
+  return data;
+}
+
+// static
+std::string BrowserAboutHandler::AboutStats() {
+  // We keep the DictionaryValue tree live so that we can do delta
+  // stats computations across runs.
+  static DictionaryValue root;
+
+  StatsTable* table = StatsTable::current();
+  if (!table)
+    return std::string();
+
+  // We maintain two lists - one for counters and one for timers.
+  // Timers actually get stored on both lists.
+  ListValue* counters;
+  if (!root.GetList(L"counters", &counters)) {
+    counters = new ListValue();
+    root.Set(L"counters", counters);
+  }
+
+  ListValue* timers;
+  if (!root.GetList(L"timers", &timers)) {
+    timers = new ListValue();
+    root.Set(L"timers", timers);
+  }
+
+  // NOTE: Counters start at index 1.
+  for (int index = 1; index <= table->GetMaxCounters(); index++) {
+    // Get the counter's full name
+    std::wstring full_name = table->GetRowName(index);
+    if (full_name.length() == 0)
+      break;
+    DCHECK(full_name[1] == L':');
+    wchar_t counter_type = full_name[0];
+    std::wstring name = full_name.substr(2);
+
+    // JSON doesn't allow '.' in names.
+    size_t pos;
+    while ( ( pos = name.find(L".") ) != -1 )
+      name.replace(pos, 1, L":");
+
+    // Try to see if this name already exists.
+    DictionaryValue* counter = NULL;
+    for (size_t scan_index = 0;
+         scan_index < counters->GetSize(); scan_index++) {
+      DictionaryValue* dictionary;
+      if (counters->GetDictionary(scan_index, &dictionary)) {
+        std::wstring scan_name;
+        if (dictionary->GetString(L"name", &scan_name) &&
+            scan_name == name) {
+          counter = dictionary;
+        }
+      } else {
+        NOTREACHED();  // Should always be there
+      }
+    }
+
+    if (counter == NULL) {
+      counter = new DictionaryValue();
+      counter->SetString(L"name", name);
+      counters->Append(counter);
+    }
+
+    switch (counter_type) {
+      case L'c':
+        {
+          int new_value = table->GetRowValue(index);
+          int prior_value = 0;
+          int delta = 0;
+          if (counter->GetInteger(L"value", &prior_value)) {
+            delta = new_value - prior_value;
+          }
+          counter->SetInteger(L"value", new_value);
+          counter->SetInteger(L"delta", delta);
+        }
+        break;
+      case L'm':
+        {
+          // TODO(mbelshe): implement me.
+        }
+        break;
+      case L't':
+        {
+          int time = table->GetRowValue(index);
+          counter->SetInteger(L"time", time);
+
+          // Store this on the timers list as well.
+          timers->Append(counter);
+        }
+        break;
+      default:
+        NOTREACHED();
+    }
+  }
+
+  // Get about_stats.html
+  static const StringPiece stats_html(
+      ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_ABOUT_STATS_HTML));
+
+  // Create jstemplate and return.
+  std::string data = jstemplate_builder::GetTemplateHtml(
+      stats_html, &root, "t" /* template root node id */);
+
+  // Clear the timer list since we stored the data in the timers list as well.
+  for (int index = static_cast<int>(timers->GetSize())-1; index >= 0;
+       index--) {
+    Value* value;
+    timers->Remove(index, &value);
+    // We don't care about the value pointer; it's still tracked
+    // on the counters list.
+  }
+
+  return data;
+}
+
+AboutMemoryHandler::AboutMemoryHandler(AboutSource* source, int request_id)
+  : source_(source),
+    request_id_(request_id) {
+  StartFetch();
+}
+
+// Helper for AboutMemory to bind results from a ProcessMetrics object
+// to a DictionaryValue. Fills ws_usage and comm_usage so that the objects
+// can be used in caller's scope (e.g for appending to a net total).
+void AboutMemoryHandler::BindProcessMetrics(DictionaryValue* data,
+      ProcessMemoryInformation* info) {
+  DCHECK(data && info);
+
+  // Bind metrics to dictionary.
+  data->SetInteger(L"ws_priv", static_cast<int>(info->working_set.priv));
+  data->SetInteger(L"ws_shareable",
+    static_cast<int>(info->working_set.shareable));
+  data->SetInteger(L"ws_shared", static_cast<int>(info->working_set.shared));
+  data->SetInteger(L"comm_priv", static_cast<int>(info->committed.priv));
+  data->SetInteger(L"comm_map", static_cast<int>(info->committed.mapped));
+  data->SetInteger(L"comm_image", static_cast<int>(info->committed.image));
+  data->SetInteger(L"pid", info->pid);
+  data->SetString(L"version", info->version);
+  data->SetInteger(L"processes", info->num_processes);
+}
+
+// Helper for AboutMemory to iterate over a RenderProcessHost's listeners
+// and retrieve the tab titles.
+void AboutMemoryHandler::GetTabContentsTitles(RenderProcessHost* rph,
+                                              ListValue* titles) {
+  RenderProcessHost::listeners_iterator iter;
+  // NOTE: This is a bit dangerous.  We know that for now, listeners
+  //       are always RenderWidgetHosts.  But in theory, they don't
+  //       have to be.
+  for (iter = rph->listeners_begin(); iter != rph->listeners_end(); iter++) {
+    RenderWidgetHost* widget = static_cast<RenderWidgetHost*>(iter->second);
+    DCHECK(widget);
+    if (!widget || !widget->IsRenderView())
+      continue;
+
+    RenderViewHost* host = static_cast<RenderViewHost*>(widget);
+    TabContents* contents = static_cast<WebContents*>(host->delegate());
+    DCHECK(contents);
+    if (!contents)
+      continue;
+
+    std::wstring title = contents->GetTitle();
+    StringValue* val = NULL;
+    if (!title.length())
+      title = L"Untitled";
+    val = new StringValue(title);
+    titles->Append(val);
+  }
+}
+
+// Helper for AboutMemory to append memory usage information for all
+// sub-processes (renderers & plugins) used by chrome.
+void AboutMemoryHandler::AppendProcess(ListValue* renderers,
+                                       ProcessMemoryInformation* info) {
+  DCHECK(renderers && info);
+
+  // Append a new DictionaryValue for this renderer to our list.
+  DictionaryValue* renderer = new DictionaryValue();
+  renderers->Append(renderer);
+  BindProcessMetrics(renderer, info);
+
+  // Now get more information about the process.
+
+  // First, figure out if it is a renderer.
+  RenderProcessHost::iterator renderer_iter;
+  for (renderer_iter = RenderProcessHost::begin(); renderer_iter !=
+       RenderProcessHost::end(); ++renderer_iter) {
+    if (renderer_iter->second->pid() == info->pid)
+      break;
+  }
+  if (renderer_iter != RenderProcessHost::end()) {
+    std::wstring renderer_label(L"Tab ");
+    renderer_label.append(FormatNumber(renderer_iter->second->host_id()));
+    if (info->is_diagnostics)
+      renderer_label.append(L" (diagnostics)");
+    renderer->SetString(L"renderer_id", renderer_label);
+    ListValue* titles = new ListValue();
+    renderer->Set(L"titles", titles);
+    GetTabContentsTitles(renderer_iter->second, titles);
+    return;
+  }
+
+  // Figure out if this is a plugin process.
+  for (size_t index = 0; index < plugins()->size(); ++index) {
+    if (info->pid == (*plugins())[index].pid) {
+      // It is a plugin!
+      std::wstring label(L"Plug-in");
+      std::wstring name;
+      renderer->SetString(L"renderer_id", label);
+      FileVersionInfo* version_info =
+          FileVersionInfo::CreateFileVersionInfo(
+              (*plugins())[index].dll_path);
+      if (version_info)
+        name = version_info->product_name();
+      ListValue* titles = new ListValue();
+      renderer->Set(L"titles", titles);
+      titles->Append(new StringValue(name));
+      return;
+    }
+  }
+}
+
+
+void AboutMemoryHandler::OnDetailsAvailable() {
+  // the root of the JSON hierarchy for about:memory jstemplate
+  DictionaryValue root;
+  ListValue* browsers = new ListValue();
+  root.Set(L"browsers", browsers);
+
+  ProcessData* browser_processes = processes();
+
+  // Aggregate per-process data into browser summary data.
+  std::wstring log_string;
+  for (int index = 0; index < MemoryDetails::MAX_BROWSERS; index++) {
+    if (browser_processes[index].processes.size() == 0)
+      continue;
+
+    // Sum the information for the processes within this browser.
+    ProcessMemoryInformation aggregate;
+    ProcessMemoryInformationList::iterator iterator;
+    iterator = browser_processes[index].processes.begin();
+    aggregate.pid = iterator->pid;
+    aggregate.version = iterator->version;
+    while (iterator != browser_processes[index].processes.end()) {
+      if (!iterator->is_diagnostics ||
+          browser_processes[index].processes.size() == 1) {
+        aggregate.working_set.priv += iterator->working_set.priv;
+        aggregate.working_set.shared += iterator->working_set.shared;
+        aggregate.working_set.shareable += iterator->working_set.shareable;
+        aggregate.committed.priv += iterator->committed.priv;
+        aggregate.committed.mapped += iterator->committed.mapped;
+        aggregate.committed.image += iterator->committed.image;
+        aggregate.num_processes++;
+      }
+      ++iterator;
+    }
+    DictionaryValue* browser_data = new DictionaryValue();
+    browsers->Append(browser_data);
+    browser_data->SetString(L"name", browser_processes[index].name);
+
+    BindProcessMetrics(browser_data, &aggregate);
+
+    // We log memory info as we record it.
+    if (log_string.length() > 0)
+      log_string.append(L", ");
+    log_string.append(browser_processes[index].name);
+    log_string.append(L", ");
+    log_string.append(Int64ToWString(aggregate.working_set.priv));
+    log_string.append(L", ");
+    log_string.append(Int64ToWString(aggregate.working_set.shared));
+    log_string.append(L", ");
+    log_string.append(Int64ToWString(aggregate.working_set.shareable));
+  }
+  if (log_string.length() > 0)
+    LOG(INFO) << "memory: " << log_string;
+
+
+  // Set the browser & renderer detailed process data.
+  DictionaryValue* browser_data = new DictionaryValue();
+  root.Set(L"browzr_data", browser_data);
+  ListValue* renderer_data = new ListValue();
+  root.Set(L"renderer_data", renderer_data);
+
+  DWORD browser_pid = GetCurrentProcessId();
+  ProcessData process = browser_processes[0];  // Chrome is the first browser.
+  for (size_t index = 0; index < process.processes.size(); index++) {
+    if (process.processes[index].pid == browser_pid)
+      BindProcessMetrics(browser_data, &process.processes[index]);
+    else
+      AppendProcess(renderer_data, &process.processes[index]);
+  }
+
+  // Get about_memory.html
+  static const StringPiece memory_html(
+      ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_ABOUT_MEMORY_HTML));
+
+  // Create jstemplate and return.
+  std::string template_html = jstemplate_builder::GetTemplateHtml(
+      memory_html, &root, "t" /* template root node id */);
+
+  AboutSource* about_source = static_cast<AboutSource*>(source_);
+  about_source->FinishDataRequest(template_html, request_id_);
+}
+
+// static
+void BrowserAboutHandler::AboutMemory(AboutSource* source, int request_id) {
+  // The AboutMemoryHandler cleans itself up.
+  new AboutMemoryHandler(source, request_id);
+}