Add DisplayClientCompositorFrameSink

services/ui/ws/platform_display_default.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_WS_PLATFORM_DISPLAY_DEFAULT_H_
 #define SERVICES_UI_WS_PLATFORM_DISPLAY_DEFAULT_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "services/ui/display/viewport_metrics.h"
 #include "services/ui/ws/frame_generator.h"
 #include "services/ui/ws/frame_generator_delegate.h"
 #include "services/ui/ws/platform_display.h"
 #include "services/ui/ws/platform_display_delegate.h"
 #include "ui/platform_window/platform_window_delegate.h"
 
 namespace ui {
 
 class ImageCursors;
+class LocatedEvent;

[Fady Samuel, 2017/03/10 19:17:40]

Revert?

[Alex Z., 2017/03/10 19:28:50]

This forward declaration is needed for UpdateEventRootLocation() 
after one of the includes in frame_generator.h is removed.

 class PlatformWindow;
 
 namespace ws {
 
 // PlatformDisplay implementation that connects to a PlatformWindow and
 // FrameGenerator for Chrome OS.
 class PlatformDisplayDefault : public PlatformDisplay,
                                public ui::PlatformWindowDelegate,
                                public FrameGeneratorDelegate {
  public:
@@ skipping 55 matching lines @@
   ServerWindow* root_window_;
   float init_device_scale_factor_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformDisplayDefault);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_PLATFORM_DISPLAY_DEFAULT_H_