Clean up forward declarations in Source/web

Source/web/WebLocalFrameImpl.h

 /*
  * Copyright (C) 2009 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 29 matching lines @@
 #include "web/UserMediaClientImpl.h"
 #include "wtf/Compiler.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ChromePrintContext;
 class GeolocationClientProxy;
-class GraphicsContext;
-class HTMLInputElement;
-class HistoryItem;
 class IntSize;
 class KURL;
-class Node;
 class Range;
 class SharedWorkerRepositoryClientImpl;
-class SubstituteData;
 class TextFinder;
 class WebDataSourceImpl;
-class WebInputElement;
 class WebFrameClient;
 class WebPerformance;
 class WebPlugin;
 class WebPluginContainerImpl;
 class WebView;
 class WebViewImpl;
 struct FrameLoadRequest;
 struct WebPrintParams;
-struct WindowFeatures;
 
 template <typename T> class WebVector;
 
 // Implementation of WebFrame, note that this is a reference counted object.
 class WebLocalFrameImpl final : public RefCountedWillBeGarbageCollectedFinalized<WebLocalFrameImpl>, public WebLocalFrame {
 public:
     // WebFrame methods:
     virtual bool isWebLocalFrame() const override;
     virtual WebLocalFrame* toWebLocalFrame() override;
     virtual bool isWebRemoteFrame() const override;
@@ skipping 284 matching lines @@
     GC_PLUGIN_IGNORE("340522")
     Persistent<WebLocalFrameImpl> m_selfKeepAlive;
 #endif
 };
 
 DEFINE_TYPE_CASTS(WebLocalFrameImpl, WebFrame, frame, frame->isWebLocalFrame(), frame.isWebLocalFrame());
 
 } // namespace blink
 
 #endif