services: Cleanup class/struct fwd declarations

services/ui/ws/platform_display.h

 // Copyright 2014 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_H_
 #define SERVICES_UI_WS_PLATFORM_DISPLAY_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "services/ui/display/viewport_metrics.h"
 #include "services/ui/public/interfaces/cursor.mojom.h"
 
 namespace gfx {
 class Rect;
 }
 
-namespace gpu {
-class GpuChannelHost;
-}
-
 namespace ui {
 
 struct TextInputState;
 
 namespace ws {
 
 class FrameGenerator;
 class PlatformDisplayDelegate;
 class PlatformDisplayFactory;
 struct PlatformDisplayInitParams;
@@ skipping 43 matching lines @@
  private:
   // Static factory instance (always NULL for non-test).
   static PlatformDisplayFactory* factory_;
 };
 
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_PLATFORM_DISPLAY_H_