Retain popup bubble mouse status even through updates.

ui/message_center/views/toast_contents_view.cc

 // 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.
 
 #include "ui/message_center/views/toast_contents_view.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 69 matching lines @@
   Layout();
 
   // If it has the contents already, this invocation means an update of the
   // popup toast, and the new contents should be read through a11y feature.
   // The notification type should be ALERT, otherwise the accessibility message
   // won't be read for this view which returns ROLE_WINDOW.
   if (already_has_contents && a11y_feedback_for_updates)
     NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, false);
 }
 
+void ToastContentsView::UpdateContents(const Notification& notification,
+                                       bool a11y_feedback_for_updates) {
+  DCHECK_GT(child_count(), 0);
+  MessageView* message_view = static_cast<MessageView*>(child_at(0));
+  message_view->UpdateWithNotification(notification);
+  if (a11y_feedback_for_updates)
+    NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, false);
+}
+
 void ToastContentsView::RevealWithAnimation(gfx::Point origin) {
   // Place/move the toast widgets. Currently it stacks the widgets from the
   // right-bottom of the work area.
   // TODO(mukai): allow to specify the placement policy from outside of this
   // class. The policy should be specified from preference on Windows, or
   // the launcher alignment on ChromeOS.
   origin_ = gfx::Point(origin.x() - preferred_size_.width(),
                        origin.y() - preferred_size_.height());
 
   gfx::Rect stable_bounds(origin_, preferred_size_);
@@ skipping 243 matching lines @@
 }
 
 gfx::Rect ToastContentsView::GetClosedToastBounds(gfx::Rect bounds) {
   return gfx::Rect(bounds.x() + bounds.width() - kClosedToastWidth,
                    bounds.y(),
                    kClosedToastWidth,
                    bounds.height());
 }
 
 }  // namespace message_center