Moved creation of GPU command buffer shared memory 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"
 
+namespace base {
+class SharedMemory;
+}
+
 namespace gpu {
 
 // Common interface for CommandBuffer implementations.
 class CommandBuffer {
  public:
   enum {
     kMaxCommandBufferSize = 4 * 1024 * 1024
   };
 
   struct State {
@@ skipping 27 matching lines @@
 
   CommandBuffer() {
   }
 
   virtual ~CommandBuffer() {
   }
 
   // Initialize the command buffer with the given size.
   virtual bool Initialize(int32 size) = 0;
 
+  // Initialize the command buffer using the given preallocated buffer.
+  virtual bool Initialize(base::SharedMemory* buffer, int32 size) = 0;
+
   // Gets the ring buffer for the command buffer.
   virtual Buffer GetRingBuffer() = 0;
 
   // Returns the current status.
   virtual State GetState() = 0;
 
   // The writer calls this to update its put offset. This ensures the reader
   // sees the latest added commands, and will eventually process them.
   virtual void Flush(int32 put_offset) = 0;
 
@@ skipping 30 matching lines @@
   // 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_