Update references to Blink's Platform API headers

webkit/gpu/webgraphicscontext3d_provider_impl.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_GPU_WEBGRAPHICSCONTEXT3D_PROVIDER_IMPL_H_
 #define WEBKIT_GPU_WEBGRAPHICSCONTEXT3D_PROVIDER_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3DProvider.h"
+#include "third_party/WebKit/public/platform/WebGraphicsContext3DProvider.h"
 #include "webkit/gpu/webkit_gpu_export.h"
 
 namespace cc { class ContextProvider; }
 
 namespace webkit {
 namespace gpu {
 
 class WEBKIT_GPU_EXPORT WebGraphicsContext3DProviderImpl
     : public NON_EXPORTED_BASE(WebKit::WebGraphicsContext3DProvider) {
  public:
   explicit WebGraphicsContext3DProviderImpl(
       scoped_refptr<cc::ContextProvider> provider);
   virtual ~WebGraphicsContext3DProviderImpl();
 
   // WebGraphicsContext3DProvider implementation.
   virtual WebKit::WebGraphicsContext3D* context3d() OVERRIDE;
   virtual GrContext* grContext() OVERRIDE;
 
  private:
   scoped_refptr<cc::ContextProvider> provider_;
 };
 
 }  // namespace gpu
 }  // namespace webkit
 
 #endif  // WEBKIT_GPU_WEBGRAPHICSCONTEXT3D_PROVIDER_IMPL_H_