GPU client side changes for GpuMemoryBuffers

android_webview/browser/gpu_memory_buffer_impl.h

 // Copyright 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 ANDROID_WEBVIEW_BROWSER_GPU_MEMORY_BUFFER_IMPL_H_
 #define ANDROID_WEBVIEW_BROWSER_GPU_MEMORY_BUFFER_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer.h"
 #include "ui/gfx/size.h"
 
 struct AwDrawGLFunctionTable;
 
 namespace android_webview {
 
 class GpuMemoryBufferImpl : public gpu::GpuMemoryBuffer {
  public:
   static void SetAwDrawGLFunctionTable(AwDrawGLFunctionTable* table);
   GpuMemoryBufferImpl(gfx::Size size);
   virtual ~GpuMemoryBufferImpl();
 
   // methods from GpuMemoryBuffer
   virtual void Map(gpu::GpuMemoryBuffer::AccessMode mode,
       void** vaddr) OVERRIDE;
   virtual void Unmap() OVERRIDE;
+  virtual bool IsMapped() OVERRIDE;
   virtual void* GetNativeBuffer() OVERRIDE;
   virtual uint32 GetStride() OVERRIDE;
 
  private:
   int buffer_id_;
   gfx::Size size_;
   bool mapped_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImpl);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_GPU_MEMORY_BUFFER_IMPL_H_