Remove GrContext from GrClipMaskCache

src/gpu/GrResourceProvider.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrResourceProvider_DEFINED
 #define GrResourceProvider_DEFINED
 
+#include "GrIndexBuffer.h"
 #include "GrTextureProvider.h"
 #include "GrPathRange.h"
 
 class GrIndexBuffer;
 class GrPath;
 class GrStrokeInfo;
 class GrVertexBuffer;
 class SkDescriptor;
 class SkPath;
 class SkTypeface;
@@ skipping 72 matching lines @@
                                                     const GrUniqueKey& key);
 
     const GrIndexBuffer* createQuadIndexBuffer();
 
     GrUniqueKey fQuadIndexBufferKey;
 
     typedef GrTextureProvider INHERITED;
 };
 
 #endif