Client side display item cache flag

third_party/WebKit/Source/web/PageOverlay.h

 /*
  * Copyright (C) 2011 Google 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.
  *
@@ skipping 59 matching lines @@
     String debugName() const final { return "PageOverlay"; }
     // TODO(chrishtr): fix this.
     IntRect visualRect() const override { return IntRect(); }
 
     // GraphicsLayerClient implementation
     IntRect computeInterestRect(const GraphicsLayer*, const IntRect&) const override;
     void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect& interestRect) const override;
     String debugName(const GraphicsLayer*) const override;
 
 private:
+    DISPLAY_ITEM_CACHE_STATUS_UNCACHEABLE_IMPLEMENTATION
+
     PageOverlay(WebViewImpl*, PageOverlay::Delegate*);
 
     WebViewImpl* m_viewImpl;
     Persistent<PageOverlay::Delegate> m_delegate;
     OwnPtr<GraphicsLayer> m_layer;
 };
 
 } // namespace blink
 
 #endif // PageOverlay_h