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diff --git a/mojo/examples/sample_app/spinning_cube.h b/mojo/examples/sample_app/spinning_cube.h
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+++ b/mojo/examples/sample_app/spinning_cube.h
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+// 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 MOJO_EXAMPLES_SAMPLE_APP_SPINNING_CUBE_H_
+#define MOJO_EXAMPLES_SAMPLE_APP_SPINNING_CUBE_H_
+
+#include <stdint.h>
+
+#include "base/memory/scoped_ptr.h"
+
+namespace examples {
+
+class SpinningCube {
+ public:
+ SpinningCube();
+ ~SpinningCube();
+
+ void Init(uint32_t width, uint32_t height);
+ void set_direction(int direction) { direction_ = direction; }
+ void set_color(float r, float g, float b) {
+ color_[0] = r;
+ color_[1] = g;
+ color_[2] = b;
+ }
+ void SetFlingMultiplier(float drag_distance, float drag_time);
+ void UpdateForTimeDelta(float delta_time);
+ void UpdateForDragDistance(float distance);
+ void Draw();
+
+ void OnGLContextLost();
+
+ private:
+ class GLState;
+
+ void Update();
+
+ bool initialized_;
+ uint32_t width_;
+ uint32_t height_;
+ scoped_ptr<GLState> state_;
+ float fling_multiplier_;
+ int direction_;
+ float color_[3];
+};
+
+} // namespace examples
+
+#endif // MOJO_EXAMPLES_SAMPLE_APP_SPINNING_CUBE_H_
