Made notification center notifications collapsed and expandable.

ui/message_center/quiet_mode_bubble.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 UI_MESSAGE_CENTER_QUIET_MODE_BUBBLE_H_
 #define UI_MESSAGE_CENTER_QUIET_MODE_BUBBLE_H_
 
 #include "base/string16.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/message_center/message_center_export.h"
@@ skipping 20 matching lines @@
   // Close the quiet mode bubble.
   void Close();
 
   // Returns the widget for the bubble.
   views::Widget* GetBubbleWidget();
 
  private:
   // Initialize the contents of the bubble.
   void InitializeBubbleContents();
 
-  // views::ButtonListener overrides:
+  // Overridden from views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   NotificationList* notification_list_;
   views::BubbleDelegateView* bubble_;
 
   // Buttons. Used in ButtonPressed() to check which button is pressed.
   views::Button* quiet_mode_;
   views::Button* quiet_mode_1hour_;
   views::Button* quiet_mode_1day_;
 
   DISALLOW_COPY_AND_ASSIGN(QuietModeBubble);
 };
 
 }  // namespace messge_center
 
 #endif  // UI_MESSAGE_CENTER_QUIET_MODE_BUBBLE_H_