Clean up forward declarations in Source/modules

Source/modules/device_orientation/DeviceOrientationDispatcher.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #ifndef DeviceOrientationDispatcher_h
 #define DeviceOrientationDispatcher_h
 
 #include "core/frame/PlatformEventDispatcher.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebDeviceOrientationListener.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
-class DeviceOrientationController;
 class DeviceOrientationData;
 class WebDeviceOrientationData;
 
 // This class listens to device orientation data and notifies all registered controllers.
 class DeviceOrientationDispatcher final : public GarbageCollectedFinalized<DeviceOrientationDispatcher>, public PlatformEventDispatcher, public WebDeviceOrientationListener {
     USING_GARBAGE_COLLECTED_MIXIN(DeviceOrientationDispatcher);
 public:
     static DeviceOrientationDispatcher& instance();
     virtual ~DeviceOrientationDispatcher();
 
@@ skipping 12 matching lines @@
     // Inherited from PlatformEventDispatcher.
     virtual void startListening() override;
     virtual void stopListening() override;
 
     Member<DeviceOrientationData> m_lastDeviceOrientationData;
 };
 
 } // namespace blink
 
 #endif // DeviceOrientationDispatcher_h