Add WebNotificationTray

ash/shell.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 ASH_SHELL_H_
 #define ASH_SHELL_H_
 #pragma once
 
 #include <utility>
 #include <vector>
@@ skipping 54 matching lines @@
 class Launcher;
 class NestedDispatcherController;
 class PowerButtonController;
 class ScreenAsh;
 class ShellDelegate;
 class ShellObserver;
 class SystemTrayDelegate;
 class SystemTray;
 class UserWallpaperDelegate;
 class VideoDetector;
+class WebNotificationTray;
 class WindowCycleController;
 
 namespace internal {
 class AcceleratorFilter;
 class ActivationController;
 class AppListController;
 class DragDropController;
 class EventClientImpl;
 class FocusCycler;
 class KeyRewriterEventFilter;
@@ skipping 207 matching lines @@
 
   // TODO(sky): don't expose this!
   internal::ShelfLayoutManager* shelf() const { return shelf_; }
 
   internal::StatusAreaWidget* status_area_widget() const {
     return status_area_widget_;
   }
 
   SystemTray* system_tray() const { return system_tray_.get(); }
 
+  WebNotificationTray* web_notification_tray() const {
+    return web_notification_tray_.get();
+  }
+
   // Returns the size of the grid.
   int GetGridSize() const;
 
   // Returns true if in maximized or fullscreen mode.
   bool IsInMaximizedMode() const;
 
   static void set_initially_hide_cursor(bool hide) {
     initially_hide_cursor_ = hide;
   }
 
@@ skipping 138 matching lines @@
 
   // Owned by aura::RootWindow, cached here for type safety.
   internal::RootWindowLayoutManager* root_window_layout_;
 
   // Widget containing system tray.
   internal::StatusAreaWidget* status_area_widget_;
 
   // System tray with clock, Wi-Fi signal, etc.
   scoped_ptr<SystemTray> system_tray_;
 
+  // Tray for web notifications.
+  scoped_ptr<WebNotificationTray> web_notification_tray_;
+
   // Used by ash/shell.
   content::BrowserContext* browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_