Don't hold onto SkBitmap in mus_demo.

services/ui/demo/mus_demo.h

 // Copyright 2016 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 SERVICES_UI_DEMO_MUS_DEMO_H_
 #define SERVICES_UI_DEMO_MUS_DEMO_H_
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/timer/timer.h"
 #include "services/service_manager/public/cpp/service.h"
-#include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/aura/mus/window_manager_delegate.h"
 #include "ui/aura/mus/window_tree_client_delegate.h"
 #include "ui/display/screen_base.h"
 
 namespace aura {
 class Env;
 class PropertyConverter;
 
 namespace client {
 class DefaultCaptureClient;
@@ skipping 85 matching lines @@
   std::unique_ptr<aura::client::DefaultCaptureClient> capture_client_;
   std::unique_ptr<::wm::WMState> wm_state_;
   std::unique_ptr<aura::PropertyConverter> property_converter_;
 
   // Window to which we draw the bitmap.
   std::unique_ptr<aura::Window> bitmap_window_;
 
   // Destroys itself when the window gets destroyed.
   aura_extra::ImageWindowDelegate* window_delegate_ = nullptr;
 
-  // Bitmap that is the same size as our client window area.
-  SkBitmap bitmap_;
-
   // Timer for calling DrawFrame().
   base::RepeatingTimer timer_;
 
   // Current rotation angle for drawing.
   double angle_ = 0.0;
 
   // Last time a frame was drawn.
   base::TimeTicks last_draw_frame_time_;
 
   DISALLOW_COPY_AND_ASSIGN(MusDemo);
 };
 
 }  // namespace demo
 }  // namespace aura
 
 #endif  // SERVICES_UI_DEMO_MUS_DEMO_H_