Move CancelableTaskTracker to //base/task/CancelableTaskTracker.

chrome/browser/ui/webui/ntp/app_launcher_handler.h

 // 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 CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_
 
 #include <set>
 #include <string>
 
 #include "apps/metrics_names.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_change_registrar.h"
+#include "base/task/cancelable_task_tracker.h"
 #include "chrome/browser/extensions/extension_uninstall_dialog.h"
 #include "chrome/browser/favicon/favicon_service.h"
 #include "chrome/browser/ui/extensions/extension_enable_flow_delegate.h"
-#include "chrome/common/cancelable_task_tracker.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_message_handler.h"
 #include "extensions/common/extension.h"
 #include "sync/api/string_ordinal.h"
 
 class ExtensionEnableFlow;
 class ExtensionService;
 class PrefChangeRegistrar;
@@ skipping 154 matching lines @@
 
   // True if we have executed HandleGetApps() at least once.
   bool has_loaded_apps_;
 
   // The ID of the app to be highlighted on the NTP (i.e. shown on the page
   // and pulsed). This is done for new installs. The actual higlighting occurs
   // when the app is added to the page (via getAppsCallback or appAdded).
   std::string highlight_app_id_;
 
   // Used for favicon loading tasks.
-  CancelableTaskTracker cancelable_task_tracker_;
+  base::CancelableTaskTracker cancelable_task_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(AppLauncherHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_