Retain popup bubble mouse status even through updates.

ui/message_center/views/toast_contents_view.h

 // Copyright (c) 2013 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_TOAST_CONTENTS_VIEW_H_
 #define UI_MESSAGE_CENTER_VIEWS_TOAST_CONTENTS_VIEW_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/gfx/animation/animation_delegate.h"
@@ skipping 32 matching lines @@
 
   ToastContentsView(const std::string& notification_id,
                     base::WeakPtr<MessagePopupCollection> collection);
   virtual ~ToastContentsView();
 
   // Sets the inner view of the toast. If it has contents already,
   // |a11y_feedback_for_updates| causes the view to notify that the
   // accessibility message should be read after this update.
   void SetContents(MessageView* view, bool a11y_feedback_for_updates);
 
+  void UpdateContents(const Notification& notification,
+                      bool a11y_feedback_for_updates);
+
   // Shows the new toast for the first time, animated.
   // |origin| is the right-bottom corner of the toast.
   void RevealWithAnimation(gfx::Point origin);
 
   // Disconnectes the toast from the rest of the system immediately and start
   // an animation. Once animation finishes, closes the widget.
   void CloseWithAnimation();
 
   void SetBoundsWithAnimation(gfx::Rect new_bounds);
 
@@ skipping 69 matching lines @@
 
   gfx::Point origin_;
   gfx::Size preferred_size_;
 
   DISALLOW_COPY_AND_ASSIGN(ToastContentsView);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_VIEWS_TOAST_CONTENTS_VIEW_H_