Introduces AppActivity and handler of chrome.shell API.

apps/shell/browser/shell_desktop_controller.h

 // Copyright 2014 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 APPS_SHELL_BROWSER_SHELL_DESKTOP_CONTROLLER_H_
 #define APPS_SHELL_BROWSER_SHELL_DESKTOP_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 31 matching lines @@
 namespace wm {
 class CompoundEventFilter;
 class CursorManager;
 class InputMethodEventFilter;
 class UserActivityDetector;
 }
 
 namespace apps {
 
 class ShellAppWindow;
+class ShellAppWindowController;
 
 // Handles desktop-related tasks for app_shell.
 class ShellDesktopController : public aura::client::WindowTreeClient,
                                public aura::WindowTreeHostObserver
 #if defined(OS_CHROMEOS)
                                ,
                                public ui::DisplayConfigurator::Observer
 #endif
                                {
  public:
   ShellDesktopController();
   virtual ~ShellDesktopController();
 
   // Returns the single instance of the desktop. (Stateless functions like
   // ShellAppWindowCreateFunction need to be able to access the desktop, so
   // we need a singleton somewhere).
   static ShellDesktopController* instance();
 
   aura::WindowTreeHost* host() { return host_.get(); }
 
   // Creates the window that hosts the app.
   void CreateRootWindow();
 
+  // Sets the controller to create/close the app windows. Takes the ownership of
+  // |app_window_controller|.
+  void SetAppWindowController(ShellAppWindowController* app_window_controller);
+
   // Creates a new app window and adds it to the desktop. The desktop maintains
   // ownership of the window.
   ShellAppWindow* CreateAppWindow(content::BrowserContext* context);
 
-  // Closes and destroys the app window.
-  void CloseAppWindow();
+  // Closes and destroys the app windows.
+  void CloseAppWindows();
 
   // Overridden from aura::client::WindowTreeClient:
   virtual aura::Window* GetDefaultParent(aura::Window* context,
                                          aura::Window* window,
                                          const gfx::Rect& bounds) OVERRIDE;
 
 #if defined(OS_CHROMEOS)
   // ui::DisplayConfigurator::Observer overrides.
   virtual void OnDisplayModeChanged(const std::vector<
       ui::DisplayConfigurator::DisplayState>& displays) OVERRIDE;
@@ skipping 32 matching lines @@
   scoped_ptr<aura::client::FocusClient> focus_client_;
 
   scoped_ptr<wm::CursorManager> cursor_manager_;
 
   scoped_ptr<wm::UserActivityDetector> user_activity_detector_;
 #if defined(OS_CHROMEOS)
   scoped_ptr<ui::UserActivityPowerManagerNotifier> user_activity_notifier_;
 #endif
 
   // The desktop supports a single app window.
-  scoped_ptr<ShellAppWindow> app_window_;
+  scoped_ptr<ShellAppWindowController> app_window_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellDesktopController);
 };
 
 }  // namespace apps
 
 #endif  // APPS_SHELL_BROWSER_SHELL_DESKTOP_CONTROLLER_H_