Made notification center notifications collapsed and expandable.

ui/message_center/message_bubble_base.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_MESSAGE_BUBBLE_BASE_H_
 #define UI_MESSAGE_CENTER_MESSAGE_BUBBLE_BASE_H_
 
 #include "base/memory/scoped_ptr.h"
+#include "ui/message_center/message_center.h"
 #include "ui/message_center/message_center_export.h"
 #include "ui/message_center/notification_list.h"

[Jun Mukai, 2013/03/01 21:44:42]

safe to remove this inclusion?

[dharcourt, 2013/03/02 02:08:02]

Yes, thanks for catching this. Done.

 #include "ui/views/bubble/tray_bubble_view.h"
 
 namespace message_center {
 
 class MESSAGE_CENTER_EXPORT MessageBubbleBase {
  public:
-  explicit MessageBubbleBase(NotificationList::Delegate* list_delegate);
+  explicit MessageBubbleBase(MessageCenter* message_center);

[dharcourt, 2013/03/01 10:17:31]

Because NotificationList::Delegate doesn't provide access to the MessageCenter's
NotificationList any more (see notification_list.h comments for details),
MessageBubbleBase and its children need direct access to the MessageCenter so
they can ask it directly for its NotificationList. They're actually getting
exactly the same object, only the type of their pointer to it has changed so
they're allowed to call its notification_list().

 
   virtual ~MessageBubbleBase();
 
   // Gets called when the bubble view associated with this bubble is
   // destroyed. Clears |bubble_view_| and calls OnBubbleViewDestroyed.
   void BubbleViewDestroyed();
 
   // Sets/Gets the maximum height of the bubble view. Setting 0 changes the
   // bubble to the default size. max_height() will return the default size
   // if SetMaxHeight() has not been called yet.
@@ skipping 26 matching lines @@
 
   views::TrayBubbleView* bubble_view() const { return bubble_view_; }
 
   static const SkColor kBackgroundColor;
   static const SkColor kHeaderBackgroundColorLight;
   static const SkColor kHeaderBackgroundColorDark;
 
  protected:
   views::TrayBubbleView::InitParams GetDefaultInitParams(
       views::TrayBubbleView::AnchorAlignment anchor_alignment);
-  NotificationList::Delegate* list_delegate() { return list_delegate_; }
+  MessageCenter* message_center() { return message_center_; }
   void set_bubble_view(views::TrayBubbleView* bubble_view) {
     bubble_view_ = bubble_view;
   }
 
  private:
-  NotificationList::Delegate* list_delegate_;
+  MessageCenter* message_center_;
   views::TrayBubbleView* bubble_view_;
   base::WeakPtrFactory<MessageBubbleBase> weak_ptr_factory_;
   int max_height_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageBubbleBase);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_MESSAGE_BUBBLE_BASE_H_