p1 mus+ash chrome renders ui and content

content/browser/compositor/software_output_device_mus.h

+// Copyright 2015 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_MUS_H_
+#define CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_MUS_H_
+
+#include "base/macros.h"
+#include "cc/output/software_output_device.h"
+#include "content/common/content_export.h"
+
+namespace ui {
+class Compositor;
+}
+
+namespace content {
+
+// Mus implementation of software compositing: Chrome will do a software
+// composite and ship the resultant bitmap to an instance of the mus
+// window server. Remove this upon completion of http://crbug.com/548451
+class SoftwareOutputDeviceMus : public cc::SoftwareOutputDevice {
+ public:
+  explicit SoftwareOutputDeviceMus(ui::Compositor* compositor);
+
+ private:
+  // cc::SoftwareOutputDevice
+  void EndPaint() override;
+
+  ui::Compositor* compositor_;
+
+  DISALLOW_COPY_AND_ASSIGN(SoftwareOutputDeviceMus);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_MUS_H_