Made notification center notifications collapsed and expandable.

ui/message_center/views/message_center_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_VIEWS_MESSAGE_CENTER_BUBBLE_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_BUBBLE_H_
 
 #include "ui/message_center/message_center_export.h"
-#include "ui/message_center/notification_list.h"
+#include "ui/message_center/notification_change_observer.h"
 #include "ui/message_center/views/message_bubble_base.h"
 
 namespace message_center {
 
-class MessageCenterContentsView;
+class MessageCenterView;
 
 // Bubble for message center.
-class MESSAGE_CENTER_EXPORT MessageCenterBubble : public MessageBubbleBase {
+class MESSAGE_CENTER_EXPORT MessageCenterBubble
+    : public MessageBubbleBase,
+      public NotificationChangeObserver {
  public:
-  explicit MessageCenterBubble(NotificationList::Delegate* delegate);
+  explicit MessageCenterBubble(MessageCenter* message_center);
 
   virtual ~MessageCenterBubble();
 
-  // Overridden from MessageBubbleBase.
+  // Overridden from MessageBubbleBase:
   virtual views::TrayBubbleView::InitParams GetInitParams(
       views::TrayBubbleView::AnchorAlignment anchor_alignment) OVERRIDE;
   virtual void InitializeContents(views::TrayBubbleView* bubble_view) OVERRIDE;
   virtual void OnBubbleViewDestroyed() OVERRIDE;
   virtual void UpdateBubbleView() OVERRIDE;
   virtual void OnMouseEnteredView() OVERRIDE;
   virtual void OnMouseExitedView() OVERRIDE;
 
+  // Overridden from NotificationChangeObserver:
+  virtual void OnRemoveNotification(const std::string& id, bool by_user)
+      OVERRIDE;
+  virtual void OnRemoveAllNotifications(bool by_user) OVERRIDE;
+  virtual void OnDisableNotificationsByExtension(const std::string& id)
+      OVERRIDE;
+  virtual void OnDisableNotificationsByUrl(const std::string& id) OVERRIDE;
+  virtual void OnShowNotificationSettings(const std::string& id) OVERRIDE;
+  virtual void OnShowNotificationSettingsDialog(gfx::NativeView context)
+      OVERRIDE;
+  virtual void OnExpanded(const std::string& id) OVERRIDE;
+  virtual void OnClicked(const std::string& id) OVERRIDE;
+  virtual void OnButtonClicked(const std::string& id,
+                               int button_index) OVERRIDE;
+
   size_t NumMessageViewsForTest() const;
 
  private:
-  MessageCenterContentsView* contents_view_;
+  MessageCenterView* contents_view_;
 
   // The maximum height
   int max_height_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterBubble);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_BUBBLE_H_