GPU client side changes for GpuMemoryBuffers

gpu/command_buffer/client/gpu_memory_buffer.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 GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "gles2_impl_export.h"
 
 namespace gpu {
 
 // Interface for creating and accessing a zero-copy GPU memory buffer.
 // This design evolved from the generalization of GraphicBuffer API
 // of Android framework.
 //
 // THREADING CONSIDERATIONS:
 //
 // This interface is thread-safe. However, multiple threads mapping
 // a buffer for Write or ReadOrWrite simultaneously may result in undefined
 // behavior and is not allowed.
 class GLES2_IMPL_EXPORT GpuMemoryBuffer {
  public:
   typedef base::Callback<scoped_ptr<GpuMemoryBuffer>(int, int)> Creator;
   enum AccessMode {
     READ_ONLY,
     WRITE_ONLY,
-    READ_OR_WRITE,
+    READ_WRITE,
   };
 
   // Frees a previously allocated buffer. Freeing a buffer that is still
   // mapped in any process is undefined behavior.
   virtual ~GpuMemoryBuffer() {}
 
   // Maps the buffer so the client can write the bitmap data in |*vaddr|
   // subsequently. This call may block, for instance if the hardware needs
   // to finish rendering or if CPU caches need to be synchronized.
   virtual void Map(AccessMode mode, void** vaddr) = 0;
 
   // Unmaps the buffer. Called after all changes to the buffer are
   // completed.
   virtual void Unmap() = 0;
 
   // Returns true iff the buffer is mapped.
   virtual bool IsMapped() = 0;
 
   // Returns the native pointer for the buffer.
   virtual void* GetNativeBuffer() = 0;
 
   // Returns the stride in pixels for the buffer.
   virtual uint32 GetStride() = 0;
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_H_