NOSUBMIT: Demonstrate accelerated layer painting problem in mus/mash

ui/views/bubble/tray_bubble_view.cc

Index: ui/views/bubble/tray_bubble_view.cc
diff --git a/ui/views/bubble/tray_bubble_view.cc b/ui/views/bubble/tray_bubble_view.cc
index ad3267fe6592c034a1dffd9794ae11e4449b1bb4..59a56b7181da7b7050805d5e2b4350f43ddccbfd 100644
--- a/ui/views/bubble/tray_bubble_view.cc
+++ b/ui/views/bubble/tray_bubble_view.cc
@@ -332,10 +332,12 @@ TrayBubbleView::TrayBubbleView(gfx::NativeView parent_window,
   set_notify_enter_exit_on_child(true);
   set_close_on_deactivate(init_params.close_on_deactivate);
   set_margins(gfx::Insets());
-  SetPaintToLayer(true);
-
-  bubble_content_mask_.reset(
-      new TrayBubbleContentMask(bubble_border_->GetBorderCornerRadius()));
+// JAMES: This and other statements below that turn on layers cause the tray
+// bubble not to paint.
+//  SetPaintToLayer(true);
+//
+//  bubble_content_mask_.reset(
+//      new TrayBubbleContentMask(bubble_border_->GetBorderCornerRadius()));
 }
 
 TrayBubbleView::~TrayBubbleView() {
@@ -350,7 +352,8 @@ void TrayBubbleView::InitializeAndShowBubble() {
   SetAlignment(params_.arrow_alignment);
   bubble_border_->UpdateArrowOffset();
 
-  layer()->parent()->SetMaskLayer(bubble_content_mask_->layer());
+  //JAMES
+  //layer()->parent()->SetMaskLayer(bubble_content_mask_->layer());
 
   GetWidget()->Show();
   GetWidget()->GetNativeWindow()->SetEventTargeter(
@@ -361,7 +364,8 @@ void TrayBubbleView::InitializeAndShowBubble() {
 void TrayBubbleView::UpdateBubble() {
   if (GetWidget()) {
     SizeToContents();
-    bubble_content_mask_->layer()->SetBounds(layer()->bounds());
+    //JAMES
+    //bubble_content_mask_->layer()->SetBounds(layer()->bounds());
     GetWidget()->GetRootView()->SchedulePaint();
   }
 }
@@ -504,10 +508,11 @@ void TrayBubbleView::ChildPreferredSizeChanged(View* child) {
 
 void TrayBubbleView::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
-  if (details.is_add && details.child == this) {
-    details.parent->SetPaintToLayer(true);
-    details.parent->layer()->SetMasksToBounds(true);
-  }
+//JAMES
+//  if (details.is_add && details.child == this) {
+//    details.parent->SetPaintToLayer(true);
+//    details.parent->layer()->SetMasksToBounds(true);
+//  }
 }
 
 }  // namespace views