blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/frame/RemoteFrameClient.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 RemoteFrameClient_h
 #define RemoteFrameClient_h
 
 #include "core/frame/FrameClient.h"
 #include "core/frame/FrameTypes.h"
 #include "core/loader/FrameLoaderTypes.h"
 #include "public/platform/WebFocusType.h"
 
 namespace blink {
 
 class Event;
 class IntRect;
+class LocalFrame;
+class MessageEvent;
 class ResourceRequest;
+class SecurityOrigin;
 
 class RemoteFrameClient : public FrameClient {
  public:
   ~RemoteFrameClient() override {}
 
   virtual void navigate(const ResourceRequest&,
                         bool shouldReplaceCurrentEntry) = 0;
   virtual void reload(FrameLoadType, ClientRedirectPolicy) = 0;
   virtual unsigned backForwardLength() = 0;
 
@@ skipping 11 matching lines @@
   virtual void advanceFocus(WebFocusType, LocalFrame* source) = 0;
 
   virtual void visibilityChanged(bool visible) = 0;
 
   virtual void setHasReceivedUserGesture() = 0;
 };
 
 }  // namespace blink
 
 #endif  // RemoteFrameClient_h