compositor-worker: plumb element id and mutable properties

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.h

 /*
  * Copyright (C) 2009, 2010, 2011 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 129 matching lines @@
     // Returns true if the assignment actually changed the assigned squashing layer.
     bool updateSquashingLayerAssignment(PaintLayer* squashedLayer, size_t nextSquashedLayerIndex);
     void removeLayerFromSquashingGraphicsLayer(const PaintLayer*);
 #if ENABLE(ASSERT)
     bool verifyLayerInSquashingVector(const PaintLayer*);
 #endif
 
     void finishAccumulatingSquashingLayers(size_t nextSquashedLayerIndex);
     void updateRenderingContext();
     void updateShouldFlattenTransform();
+    void updateElementIdAndMutableProperties();
 
     // GraphicsLayerClient interface
     void notifyAnimationStarted(const GraphicsLayer*, double monotonicTime, int group) override;
     void notifyFirstPaint() override;
     void notifyFirstTextPaint() override;
     void notifyFirstImagePaint() override;
 
     void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect* clip) const override;
     bool isTrackingPaintInvalidations() const override;
 
@@ skipping 282 matching lines @@
     unsigned m_scrollingContentsAreEmpty : 1;
 
     mutable IntRect m_previousPaintInterestRect;
 
     friend class CompositedLayerMappingTest;
 };
 
 } // namespace blink
 
 #endif // CompositedLayerMapping_h