Add the UI compositor to the Mac build

content/browser/aura/software_output_device_x11.h

Index: content/browser/aura/software_output_device_x11.h
diff --git a/content/browser/aura/software_output_device_x11.h b/content/browser/aura/software_output_device_x11.h
deleted file mode 100644
index 799a65ef790c894d4c89efdf77f7bc5675f9d39b..0000000000000000000000000000000000000000
--- a/content/browser/aura/software_output_device_x11.h
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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 CONTENT_BROWSER_AURA_SOFTWARE_OUTPUT_DEVICE_X11_H_
-#define CONTENT_BROWSER_AURA_SOFTWARE_OUTPUT_DEVICE_X11_H_
-
-#include <X11/Xlib.h>
-
-#include "cc/output/software_output_device.h"
-#include "ui/gfx/x/x11_types.h"
-
-namespace ui {
-class Compositor;
-}
-
-namespace content {
-
-class SoftwareOutputDeviceX11 : public cc::SoftwareOutputDevice {
- public:
-  explicit SoftwareOutputDeviceX11(ui::Compositor* compositor);
-
-  virtual ~SoftwareOutputDeviceX11();
-
-  virtual void EndPaint(cc::SoftwareFrameData* frame_data) OVERRIDE;
-
- private:
-  ui::Compositor* compositor_;
-  XDisplay* display_;
-  GC gc_;
-  XWindowAttributes attributes_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_AURA_SOFTWARE_OUTPUT_DEVICE_X11_H_