Remove unused class WebNinePatchLayer.h.

public/platform/WebCompositorSupport.h

 /*
  * Copyright (C) 2012 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 31 matching lines @@
 class WebContentLayer;
 class WebContentLayerClient;
 class WebDisplayItemList;
 class WebExternalTextureLayer;
 class WebExternalTextureLayerClient;
 class WebFilterAnimationCurve;
 class WebFilterOperations;
 class WebFloatAnimationCurve;
 class WebGraphicsContext3D;
 class WebImageLayer;
-class WebNinePatchLayer;
 class WebLayer;
 class WebScrollbarLayer;
 class WebScrollbarThemeGeometry;
 class WebScrollOffsetAnimationCurve;
 class WebTransformAnimationCurve;
 class WebTransformOperations;
 
 class WebCompositorSupport {
 public:
 
@@ skipping 34 matching lines @@
 
     virtual WebDisplayItemList* createDisplayItemList() { return nullptr; }
 
 protected:
     virtual ~WebCompositorSupport() { }
 };
 
 }
 
 #endif // WebCompositorSupport_h