Change glimage to accept a type.

gpu/command_buffer/client/gpu_memory_buffer_factory.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_FACTORY_BUFFER_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_FACTORY_BUFFER_H_
 
 #include "gpu/gpu_export.h"
 
 namespace gfx {
 class GpuMemoryBuffer;
 }
 
 namespace gpu {
 
 class GPU_EXPORT GpuMemoryBufferFactory {
  public:
-  virtual gfx::GpuMemoryBuffer* CreateGpuMemoryBuffer(
-      size_t width,
-      size_t height,
-      unsigned internalformat) = 0;
+  virtual gfx::GpuMemoryBuffer* CreateGpuMemoryBuffer(size_t width,
+                                                      size_t height,
+                                                      unsigned internalformat,
+                                                      unsigned usage) = 0;
 
  protected:
   virtual ~GpuMemoryBufferFactory() {}
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_FACTORY_H_