Revert of p1 mus+ash chrome renders ui and content

content/browser/compositor/software_output_device_mus.h

Index: content/browser/compositor/software_output_device_mus.h
diff --git a/content/browser/compositor/software_output_device_mus.h b/content/browser/compositor/software_output_device_mus.h
deleted file mode 100644
index d4a2e4500b46752c895207a7459c6ea3f2b1c99b..0000000000000000000000000000000000000000
--- a/content/browser/compositor/software_output_device_mus.h
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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_