GPU: 'Pass' SharedMemory when possible.

gpu/command_buffer/common/buffer.h

 // Copyright (c) 2014 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_BUFFER_H_
 #define GPU_COMMAND_BUFFER_COMMON_BUFFER_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "gpu/command_buffer/common/types.h"
 #include "gpu/gpu_export.h"
 
 namespace base {
   class SharedMemory;
 }
 
 namespace gpu {
 
-// Buffer/ThreadSafeBuffer own a piece of shared-memory of a certain size.
+// Buffer owns a piece of shared-memory of a certain size.
 class GPU_EXPORT Buffer : public base::RefCountedThreadSafe<Buffer> {
  public:
   Buffer(scoped_ptr<base::SharedMemory> shared_memory, size_t size);
 
   base::SharedMemory* shared_memory() { return shared_memory_.get(); }
   void* memory() { return memory_; }
   size_t size() { return size_; }
 
  private:
   friend class base::RefCountedThreadSafe<Buffer>;
   ~Buffer();
 
   scoped_ptr<base::SharedMemory> shared_memory_;
   void* memory_;
   size_t size_;
 
   DISALLOW_COPY_AND_ASSIGN(Buffer);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_BUFFER_H_