HTMLPluginElement should use setNeedsCompositingUpdate()

Source/core/layout/compositing/DeprecatedPaintLayerCompositor.cpp

 /*
  * Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 88 matching lines @@
     return m_compositing;
 }
 
 void DeprecatedPaintLayerCompositor::setCompositingModeEnabled(bool enable)
 {
     if (enable == m_compositing)
         return;
 
     m_compositing = enable;
 
-    // LayoutPart::requiresAcceleratedCompositing is used to determine self-paintingness
-    // and bases it's return value for frames on the m_compositing bit here.
-    if (HTMLFrameOwnerElement* ownerElement = m_layoutView.document().ownerElement()) {
-        if (LayoutPart* layoutObject = ownerElement->layoutPart())
-            layoutObject->layer()->updateSelfPaintingLayer();
-    }
-
     if (m_compositing)
         ensureRootLayer();
     else
         destroyRootLayer();
 
-    // Compositing also affects the answer to LayoutIFrame::requiresAcceleratedCompositing(), so
-    // we need to schedule a style recalc in our parent document.
+    // Schedule an update in the parent frame so the <iframe>'s layer in the owner
+    // document matches the compositing state here.
     if (HTMLFrameOwnerElement* ownerElement = m_layoutView.document().ownerElement())
         ownerElement->setNeedsCompositingUpdate();
 }
 
 void DeprecatedPaintLayerCompositor::enableCompositingModeIfNeeded()
 {
     if (!m_rootShouldAlwaysCompositeDirty)
         return;
 
     m_rootShouldAlwaysCompositeDirty = false;
@@ skipping 1075 matching lines @@
     } else if (graphicsLayer == m_scrollLayer.get()) {
         name = "LocalFrame Scrolling Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink