Allow message center and related bubbles to render on Windows.

ui/message_center/message_popup_bubble.cc

 // 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.
 
 #include "ui/message_center/message_popup_bubble.h"
 
 #include "base/bind.h"
 #include "ui/message_center/message_view.h"
 #include "ui/message_center/message_view_factory.h"
 #include "ui/notifications/notification_types.h"
@@ skipping 33 matching lines @@
   explicit PopupBubbleContentsView(NotificationList::Delegate* list_delegate)
       : list_delegate_(list_delegate) {
     SetLayoutManager(
         new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 1));
 
     content_ = new views::View;
     content_->SetLayoutManager(
         new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 1));
     AddChildView(content_);
 
-    content_->SetPaintToLayer(true);
-    content_->SetFillsBoundsOpaquely(false);
-    content_->layer()->SetMasksToBounds(true);
+    if (get_use_acceleration_when_possible()) {
+      content_->SetPaintToLayer(true);
+      content_->SetFillsBoundsOpaquely(false);
+      content_->layer()->SetMasksToBounds(true);
+    }
   }
 
   void Update(const NotificationList::Notifications& popup_notifications) {
     content_->RemoveAllChildViews(true);
     for (NotificationList::Notifications::const_iterator iter =
              popup_notifications.begin();
          iter != popup_notifications.end(); ++iter) {
       MessageView* view =
           MessageViewFactory::ViewForNotification(*iter, list_delegate_);
       view->SetUpView();
@@ skipping 127 matching lines @@
   else
     should_run_default_timer_ = false;
   UpdateBubbleView();
 }
 
 size_t MessagePopupBubble::NumMessageViewsForTest() const {
   return contents_view_->NumMessageViews();
 }
 
 }  // namespace message_center