Moved creation of GPU transfer buffers into the browser process....

gpu/command_buffer/common/command_buffer.h

 // Copyright (c) 2009 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_COMMON_COMMAND_BUFFER_H_
 #define GPU_COMMAND_BUFFER_COMMON_COMMAND_BUFFER_H_
 
 #include "../common/buffer.h"
 #include "../common/constants.h"
 
@@ skipping 62 matching lines @@
   // empty and there is no error).
   virtual State FlushSync(int32 put_offset) = 0;
 
   // Sets the current get offset. This can be called from any thread.
   virtual void SetGetOffset(int32 get_offset) = 0;
 
   // Create a transfer buffer and return a handle that uniquely
   // identifies it or -1 on error.
   virtual int32 CreateTransferBuffer(size_t size) = 0;
 
+  // Register an existing shared memory object and get an ID that can be used
+  // to identify it in the command buffer. Callee dups the handle until
+  // DestroyTransferBuffer is called.
+  virtual int32 RegisterTransferBuffer(base::SharedMemory* shared_memory,
+                                       size_t size) = 0;
+
   // Destroy a transfer buffer and recycle the handle.
   virtual void DestroyTransferBuffer(int32 id) = 0;
 
   // Get the transfer buffer associated with a handle.
   virtual Buffer GetTransferBuffer(int32 handle) = 0;
 
   // Allows the reader to update the current token value.
   virtual void SetToken(int32 token) = 0;
 
   // Allows the reader to set the current parse error.
   virtual void SetParseError(error::Error) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CommandBuffer);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_COMMAND_BUFFER_H_