blink: Cleanup class forward declarations

third_party/WebKit/Source/modules/screen_orientation/ScreenOrientationController.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 ScreenOrientationController_h
 #define ScreenOrientationController_h
 
 #include "core/frame/DOMWindowProperty.h"
 #include "core/frame/PlatformEventController.h"
 #include "modules/ModulesExport.h"
 #include "platform/Supplementable.h"
 #include "platform/Timer.h"
 #include "public/platform/modules/screen_orientation/WebLockOrientationCallback.h"
 #include "public/platform/modules/screen_orientation/WebScreenOrientationLockType.h"
 #include "public/platform/modules/screen_orientation/WebScreenOrientationType.h"
 
 namespace blink {
 
-class FrameView;
 class ScreenOrientation;
 class WebScreenOrientationClient;
 
 class MODULES_EXPORT ScreenOrientationController final
     : public GarbageCollectedFinalized<ScreenOrientationController>,
       public Supplement<LocalFrame>,
       public DOMWindowProperty,
       public PlatformEventController {
   USING_GARBAGE_COLLECTED_MIXIN(ScreenOrientationController);
   WTF_MAKE_NONCOPYABLE(ScreenOrientationController);
@@ skipping 37 matching lines @@
   bool isActiveAndVisible() const;
 
   Member<ScreenOrientation> m_orientation;
   WebScreenOrientationClient* m_client;
   Timer<ScreenOrientationController> m_dispatchEventTimer;
 };
 
 }  // namespace blink
 
 #endif  // ScreenOrientationController_h