blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/inspector/InspectorLayerTreeAgent.h

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 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 25 matching lines @@
 #include "platform/Timer.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class GraphicsContext;
 class GraphicsLayer;
 class InspectedFrames;
-class LayoutObject;
 class LayoutRect;
 class PictureSnapshot;
 class PaintLayer;
 class PaintLayerCompositor;
 
 class CORE_EXPORT InspectorLayerTreeAgent final
     : public InspectorBaseAgent<protocol::LayerTree::Metainfo> {
   WTF_MAKE_NONCOPYABLE(InspectorLayerTreeAgent);
 
  public:
@@ skipping 76 matching lines @@
   Vector<int, 2> m_pageOverlayLayerIds;
 
   typedef HashMap<String, RefPtr<PictureSnapshot>> SnapshotById;
   SnapshotById m_snapshotById;
   bool m_suppressLayerPaintEvents;
 };
 
 }  // namespace blink
 
 #endif  // !defined(InspectorLayerTreeAgent_h)