arc: Support running Arc app in shelf

chrome/browser/ui/ash/launcher/chrome_launcher_controller.h

 // Copyright 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 CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_H_
 
 #include <list>
 #include <map>
 #include <set>
@@ skipping 371 matching lines @@
   // Called when the user profile is fully loaded and ready to switch to.
   void OnUserProfileReadyToSwitch(Profile* profile);
 
   // Access to the BrowserStatusMonitor for tests.
   BrowserStatusMonitor* browser_status_monitor_for_test() {
     return browser_status_monitor_.get();
   }
 
   // Access to the AppWindowLauncherController for tests.
   AppWindowLauncherController* app_window_controller_for_test() {
-    return app_window_controller_.get();
+    return app_window_controllers_[0].get();
   }
 
   bool CanPin(const std::string& app_id);
 
  protected:
   // Creates a new app shortcut item and controller on the shelf at |index|.
   // Use kInsertItemAtEnd to add a shortcut as the last item.
   ash::ShelfID CreateAppShortcutLauncherItem(const std::string& app_id,
                                              int index);
 
@@ skipping 148 matching lines @@
   // profile new windows are created with.
   Profile* profile_;
 
   // Controller items in this map are owned by |ShelfItemDelegateManager|.
   IDToItemControllerMap id_to_item_controller_map_;
 
   // Direct access to app_id for a web contents.
   WebContentsToAppIDMap web_contents_to_app_id_;
 
   // Used to track app windows.
-  scoped_ptr<AppWindowLauncherController> app_window_controller_;
+  std::vector<scoped_ptr<AppWindowLauncherController>> app_window_controllers_;
 
   // Used to get app info for tabs.
   scoped_ptr<AppTabHelper> app_tab_helper_;
 
   // Used to load the image for an extension app item.
   std::vector<scoped_ptr<AppIconLoader>> app_icon_loaders_;
 
   // Used to handle app load/unload events.
   std::vector<scoped_ptr<LauncherAppUpdater>> app_updaters_;
 
@@ skipping 20 matching lines @@
   // The list of running & un-pinned applications for different users on hidden
   // desktops.
   typedef std::vector<std::string> RunningAppListIds;
   typedef std::map<std::string, RunningAppListIds> RunningAppListIdMap;
   RunningAppListIdMap last_used_running_application_order_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeLauncherController);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_H_