Allow message center and related bubbles to render on Windows.

ui/message_center/message_center_bubble.cc

Index: ui/message_center/message_center_bubble.cc
diff --git a/ui/message_center/message_center_bubble.cc b/ui/message_center/message_center_bubble.cc
index ecd94cd0b14a6706b1b279b426784676b146e97e..95760c2fcbaa2abc2627d02e8bd98fafc36ebdda 100644
--- a/ui/message_center/message_center_bubble.cc
+++ b/ui/message_center/message_center_bubble.cc
@@ -365,9 +365,11 @@ class MessageCenterContentsView : public views::View {
     scroller_->SetContents(scroll_content_);
     AddChildView(scroller_);
 
-    scroller_->SetPaintToLayer(true);
-    scroller_->SetFillsBoundsOpaquely(false);
-    scroller_->layer()->SetMasksToBounds(true);
+    if (get_use_acceleration_when_possible()) {
+      scroller_->SetPaintToLayer(true);
+      scroller_->SetFillsBoundsOpaquely(false);
+      scroller_->layer()->SetMasksToBounds(true);
+    }
 
     if (UseNewDesign())
       button_view_ = new WebNotificationButtonView2(list_delegate);