Clean up forward declarations in Source/modules

Source/modules/notifications/NotificationController.h

 /*
 * Copyright (C) 2011 Apple 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:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
@@ skipping 15 matching lines @@
 #ifndef NotificationController_h
 #define NotificationController_h
 
 #include "core/frame/LocalFrame.h"
 #include "wtf/Forward.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class NotificationClient;
-class NotificationPermissionClient;
 
 class NotificationController final : public NoBaseWillBeGarbageCollectedFinalized<NotificationController>, public WillBeHeapSupplement<LocalFrame> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NotificationController);
     WTF_MAKE_NONCOPYABLE(NotificationController);
 public:
     virtual ~NotificationController();
 
     static PassOwnPtrWillBeRawPtr<NotificationController> create(PassOwnPtr<NotificationClient>);
     static const char* supplementName();
     static NotificationController* from(ExecutionContext*);
     static NotificationClient& clientFrom(ExecutionContext*);
 
     virtual void trace(Visitor* visitor) override { WillBeHeapSupplement<LocalFrame>::trace(visitor); }
 
 private:
     explicit NotificationController(PassOwnPtr<NotificationClient>);
 
     NotificationClient& client() { return *m_client; }
 
     OwnPtr<NotificationClient> m_client;
 };
 
 void provideNotification(LocalFrame&, PassOwnPtr<NotificationClient>);
 
 } // namespace blink
 
 #endif // NotificationController_h