Delete most of rendering/compositing.

sky/engine/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 177 matching lines @@
     void removeAnimation(int animationId);
 
     // Layer contents
     void setContentsToImage(Image*);
     void setContentsToPlatformLayer(WebLayer* layer) { setContentsTo(layer); }
     bool hasContentsLayer() const { return m_contentsLayer; }
 
     // For hosting this GraphicsLayer in a native layer hierarchy.
     WebLayer* platformLayer() const;
 
-    typedef HashMap<int, int> RenderingContextMap;
-    PassRefPtr<JSONObject> layerTreeAsJSON(LayerTreeFlags, RenderingContextMap&) const;
-
     int paintCount() const { return m_paintCount; }
 
-    // Return a string with a human readable form of the layer tree, If debug is true
-    // pointers for the layers and timing data will be included in the returned string.
-    String layerTreeAsText(LayerTreeFlags = LayerTreeNormal) const;
-
     void resetTrackedPaintInvalidations();
     void addRepaintRect(const FloatRect&);
 
     void addLinkHighlight(LinkHighlightClient*);
     void removeLinkHighlight(LinkHighlightClient*);
     // Exposed for tests
     unsigned numLinkHighlights() { return m_linkHighlights.size(); }
     LinkHighlightClient* linkHighlight(int i) { return m_linkHighlights[i]; }
 
     void setScrollableArea(ScrollableArea*);
@@ skipping 101 matching lines @@
 
     OwnPtr<OpaqueRectTrackingContentLayerDelegate> m_opaqueRectTrackingContentLayerDelegate;
 
     ScrollableArea* m_scrollableArea;
     GraphicsLayerDebugInfo m_debugInfo;
     int m_3dRenderingContext;
 };
 
 } // namespace blink
 
-#ifndef NDEBUG
-// Outside the WebCore namespace for ease of invocation from gdb.
-void PLATFORM_EXPORT showGraphicsLayerTree(const blink::GraphicsLayer*);
-#endif
-
 #endif  // SKY_ENGINE_PLATFORM_GRAPHICS_GRAPHICSLAYER_H_