gpu: Add GpuMemoryBufferFactory interface.

gpu/command_buffer/client/gl_in_process_context.h

Index: gpu/command_buffer/client/gl_in_process_context.h
diff --git a/gpu/command_buffer/client/gl_in_process_context.h b/gpu/command_buffer/client/gl_in_process_context.h
index c4fb70f6daf371f38b13c36e3ff03509594be2bd..9e38b1c84bf2041bad89f4334f0e809b62dc97af 100644
--- a/gpu/command_buffer/client/gl_in_process_context.h
+++ b/gpu/command_buffer/client/gl_in_process_context.h
@@ -21,15 +21,14 @@ namespace gles2 {
 class GLES2Implementation;
 }
 
-class GpuMemoryBuffer;
+class GpuMemoryBufferFactory;
 
 class GLES2_IMPL_EXPORT GLInProcessContext {
  public:
   virtual ~GLInProcessContext() {}
 
-  typedef scoped_ptr< ::gpu::GpuMemoryBuffer> GpuMemoryBufferCreator(
-      int width, int height);
-  static void SetGpuMemoryBufferCreator(GpuMemoryBufferCreator* creator);
+  // Must be called before any GLInProcessContext instances are created.
+  static void SetGpuMemoryBufferFactory(GpuMemoryBufferFactory* factory);
 
   // Must be called before any GLInProcessContext instances are created.
   // Default value is false.