Revert 57635: Implement about:labs

chrome/browser/dom_ui/labs_ui.cc

Index: chrome/browser/dom_ui/labs_ui.cc
diff --git a/chrome/browser/dom_ui/labs_ui.cc b/chrome/browser/dom_ui/labs_ui.cc
deleted file mode 100644
index 3e02112b04f77ac80aabd75c9144732ceb3ed9de..0000000000000000000000000000000000000000
--- a/chrome/browser/dom_ui/labs_ui.cc
+++ /dev/null
@@ -1,196 +0,0 @@
-// Copyright (c) 2010 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/dom_ui/labs_ui.h"
-
-#include <string>
-
-#include "app/l10n_util.h"
-#include "app/resource_bundle.h"
-#include "base/singleton.h"
-#include "base/values.h"
-#include "chrome/browser/browser_list.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/chrome_thread.h"
-#include "chrome/browser/dom_ui/chrome_url_data_manager.h"
-#include "chrome/browser/labs.h"
-#include "chrome/browser/prefs/pref_service.h"
-#include "chrome/common/jstemplate_builder.h"
-#include "chrome/common/pref_names.h"
-#include "chrome/common/url_constants.h"
-#include "grit/browser_resources.h"
-#include "grit/chromium_strings.h"
-#include "grit/generated_resources.h"
-#include "grit/theme_resources.h"
-
-namespace {
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// LabsUIHTMLSource
-//
-///////////////////////////////////////////////////////////////////////////////
-
-class LabsUIHTMLSource : public ChromeURLDataManager::DataSource {
- public:
-  LabsUIHTMLSource()
-      : DataSource(chrome::kChromeUILabsHost, MessageLoop::current()) {}
-
-  // Called when the network layer has requested a resource underneath
-  // the path we registered.
-  virtual void StartDataRequest(const std::string& path,
-                                bool is_off_the_record,
-                                int request_id);
-  virtual std::string GetMimeType(const std::string&) const {
-    return "text/html";
-  }
-
- private:
-  ~LabsUIHTMLSource() {}
-
-  DISALLOW_COPY_AND_ASSIGN(LabsUIHTMLSource);
-};
-
-void LabsUIHTMLSource::StartDataRequest(const std::string& path,
-                                           bool is_off_the_record,
-                                           int request_id) {
-  // Strings used in the JsTemplate file.
-  DictionaryValue localized_strings;
-  localized_strings.SetString("labsTitle",
-      l10n_util::GetStringUTF16(IDS_LABS_TITLE));
-  localized_strings.SetString("labsLongTitle",
-      l10n_util::GetStringUTF16(IDS_LABS_LONG_TITLE));
-  localized_strings.SetString("labsTableTitle",
-      l10n_util::GetStringUTF16(IDS_LABS_TABLE_TITLE));
-  localized_strings.SetString("labsNoExperimentsAvailable",
-      l10n_util::GetStringUTF16(IDS_LABS_NO_EXPERIMENTS_AVAILABLE));
-  localized_strings.SetString("labsBlurb", l10n_util::GetStringFUTF16(
-      IDS_LABS_BLURB,
-      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
-  localized_strings.SetString("labsRestartNotice", l10n_util::GetStringFUTF16(
-      IDS_LABS_RESTART_NOTICE,
-      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
-  localized_strings.SetString("labsRestartButton",
-      l10n_util::GetStringUTF16(IDS_LABS_RESTART_BUTTON));
-  localized_strings.SetString("disable",
-      l10n_util::GetStringUTF16(IDS_LABS_DISABLE));
-  localized_strings.SetString("enable",
-      l10n_util::GetStringUTF16(IDS_LABS_ENABLE));
-
-  ChromeURLDataManager::DataSource::SetFontAndTextDirection(&localized_strings);
-
-  static const base::StringPiece labs_html(
-      ResourceBundle::GetSharedInstance().GetRawDataResource(IDR_LABS_HTML));
-  std::string full_html(labs_html.data(), labs_html.size());
-  jstemplate_builder::AppendJsonHtml(&localized_strings, &full_html);
-  jstemplate_builder::AppendI18nTemplateSourceHtml(&full_html);
-  jstemplate_builder::AppendI18nTemplateProcessHtml(&full_html);
-  jstemplate_builder::AppendJsTemplateSourceHtml(&full_html);
-
-  scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
-  html_bytes->data.resize(full_html.size());
-  std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
-
-  SendResponse(request_id, html_bytes);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-//
-// LabsDOMHandler
-//
-////////////////////////////////////////////////////////////////////////////////
-
-// The handler for Javascript messages for the chrome://labs/ page.
-class LabsDOMHandler : public DOMMessageHandler {
- public:
-  LabsDOMHandler() {}
-  virtual ~LabsDOMHandler() {}
-
-  // DOMMessageHandler implementation.
-  virtual void RegisterMessages();
-
-  // Callback for the "requestLabsExperiments" message.
-  void HandleRequestLabsExperiments(const ListValue* args);
-
-  // Callback for the "enableLabsExperiment" message.
-  void HandleEnableLabsExperimentMessage(const ListValue* args);
-
-  // Callback for the "restartBrowser" message. Restores all tabs on restart.
-  void HandleRestartBrowser(const ListValue* args);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(LabsDOMHandler);
-};
-
-void LabsDOMHandler::RegisterMessages() {
-  dom_ui_->RegisterMessageCallback("requestLabsExperiments",
-      NewCallback(this, &LabsDOMHandler::HandleRequestLabsExperiments));
-  dom_ui_->RegisterMessageCallback("enableLabsExperiment",
-      NewCallback(this, &LabsDOMHandler::HandleEnableLabsExperimentMessage));
-  dom_ui_->RegisterMessageCallback("restartBrowser",
-      NewCallback(this, &LabsDOMHandler::HandleRestartBrowser));
-}
-
-void LabsDOMHandler::HandleRequestLabsExperiments(const ListValue* args) {
-  DictionaryValue results;
-  results.Set("labsExperiments",
-              about_labs::GetLabsExperimentsData(dom_ui_->GetProfile()));
-  results.SetBoolean("needsRestart",
-                     about_labs::IsRestartNeededToCommitChanges());
-  dom_ui_->CallJavascriptFunction(L"returnLabsExperiments", results);
-}
-
-void LabsDOMHandler::HandleEnableLabsExperimentMessage(const ListValue* args) {
-  DCHECK_EQ(2u, args->GetSize());
-  if (args->GetSize() != 2)
-    return;
-
-  std::string experiment_internal_name;
-  std::string enable_str;
-  if (!args->GetString(0, &experiment_internal_name) ||
-      !args->GetString(1, &enable_str))
-    return;
-
-  about_labs::SetExperimentEnabled(
-      dom_ui_->GetProfile(), experiment_internal_name, enable_str == "true");
-}
-
-void LabsDOMHandler::HandleRestartBrowser(const ListValue* args) {
-  // Set the flag to restore state after the restart.
-  PrefService* pref_service = g_browser_process->local_state();
-  pref_service->SetBoolean(prefs::kRestartLastSessionOnShutdown, true);
-  BrowserList::CloseAllBrowsersAndExit();
-}
-
-}  // namespace
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// LabsUI
-//
-///////////////////////////////////////////////////////////////////////////////
-
-LabsUI::LabsUI(TabContents* contents) : DOMUI(contents) {
-  AddMessageHandler((new LabsDOMHandler())->Attach(this));
-
-  LabsUIHTMLSource* html_source = new LabsUIHTMLSource();
-
-  // Set up the chrome://labs/ source.
-  ChromeThread::PostTask(
-      ChromeThread::IO, FROM_HERE,
-      NewRunnableMethod(Singleton<ChromeURLDataManager>::get(),
-          &ChromeURLDataManager::AddDataSource,
-          make_scoped_refptr(html_source)));
-}
-
-// static
-RefCountedMemory* LabsUI::GetFaviconResourceBytes() {
-  return ResourceBundle::GetSharedInstance().
-      LoadDataResourceBytes(IDR_LABS);
-}
-
-// static
-void LabsUI::RegisterUserPrefs(PrefService* prefs) {
-  prefs->RegisterListPref(prefs::kEnabledLabsExperiments);
-}