Simplify incremental paint invalidation

third_party/WebKit/Source/platform/graphics/GraphicsLayer.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. 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
@@ skipping 44 matching lines @@
 #include <memory>
 
 namespace blink {
 
 class CompositorFilterOperations;
 class FloatRect;
 class Image;
 class JSONObject;
 class LinkHighlight;
 class PaintController;
+struct RasterInvalidationTracking;
 class ScrollableArea;
 class WebLayer;
 
 typedef Vector<GraphicsLayer*, 64> GraphicsLayerVector;
 
 // GraphicsLayer is an abstraction for a rendering surface with backing store,
 // which may have associated transformation and animations.
 
 class PLATFORM_EXPORT GraphicsLayer : public WebLayerScrollClient,
                                       public cc::LayerClient,
@@ skipping 148 matching lines @@
   std::unique_ptr<JSONObject> layerTreeAsJSON(LayerTreeFlags) const;
 
   void setTracksRasterInvalidations(bool);
   bool isTrackingOrCheckingRasterInvalidations() const {
     return RuntimeEnabledFeatures::paintUnderInvalidationCheckingEnabled() ||
            m_isTrackingRasterInvalidations;
   }
 
   void resetTrackedRasterInvalidations();
   bool hasTrackedRasterInvalidations() const;
+  const RasterInvalidationTracking* getRasterInvalidationTracking() const;
   void trackRasterInvalidation(const DisplayItemClient&,
                                const IntRect&,
                                PaintInvalidationReason);
 
   void addLinkHighlight(LinkHighlight*);
   void removeLinkHighlight(LinkHighlight*);
   // Exposed for tests
   unsigned numLinkHighlights() { return m_linkHighlights.size(); }
   LinkHighlight* getLinkHighlight(int i) { return m_linkHighlights[i]; }
 
@@ skipping 161 matching lines @@
 };
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the blink namespace for ease of invocation from gdb.
 void PLATFORM_EXPORT showGraphicsLayerTree(const blink::GraphicsLayer*);
 #endif
 
 #endif  // GraphicsLayer_h