Make delegated software renderer work on Mac

content/browser/compositor/software_output_device_mac.h

+// Copyright 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 CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_MAC_H_
+#define CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_MAC_H_
+
+#include "cc/output/software_output_device.h"
+
+namespace gfx {
+class Canvas;
+}
+
+namespace ui {
+class Compositor;
+}
+
+namespace content {
+
+class SoftwareOutputDeviceMac : public cc::SoftwareOutputDevice {
+ public:
+  explicit SoftwareOutputDeviceMac(ui::Compositor* compositor);
+  virtual ~SoftwareOutputDeviceMac();
+
+  virtual void EndPaint(cc::SoftwareFrameData* frame_data) OVERRIDE;
+
+ private:
+  ui::Compositor* compositor_;
+
+  DISALLOW_COPY_AND_ASSIGN(SoftwareOutputDeviceMac);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_MAC_H_