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diff --git a/o3d/gpu_plugin/gpu_processor.h b/o3d/gpu_plugin/gpu_processor.h
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+++ b/o3d/gpu_plugin/gpu_processor.h
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+// Copyright (c) 2006-2008 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 O3D_GPU_PLUGIN_GPU_PROCESSOR_H_
+#define O3D_GPU_PLUGIN_GPU_PROCESSOR_H_
+
+#include "base/ref_counted.h"
+#include "o3d/gpu_plugin/command_buffer.h"
+#include "o3d/gpu_plugin/np_utils/np_object_pointer.h"
+
+namespace o3d {
+namespace gpu_plugin {
+
+// This class processes commands in a command buffer. It is event driven and
+// posts tasks to the current message loop to do additional work.
+class GPUProcessor : public base::RefCountedThreadSafe<GPUProcessor> {
+ public:
+  explicit GPUProcessor(const NPObjectPointer<CommandBuffer>& command_buffer);
+
+  void ProcessCommands();
+
+#if defined(OS_WIN)
+  void SetWindow(HWND handle, int width, int height);
+#endif
+
+  void DrawRectangle(uint32 color, int left, int top, int right, int bottom);
+
+ private:
+  NPObjectPointer<CommandBuffer> command_buffer_;
+
+#if defined(OS_WIN)
+  HWND window_handle_;
+  int window_width_;
+  int window_height_;
+#endif
+};
+
+}  // namespace gpu_plugin
+}  // namespace o3d
+
+#endif  // O3D_GPU_PLUGIN_GPU_PROCESSOR_H_