Clean up forward declarations in Source/core/inspector

Source/core/inspector/InspectorResourceAgent.h

 /*
  * Copyright (C) 2010 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 21 matching lines @@
 #define InspectorResourceAgent_h
 
 #include "bindings/core/v8/ScriptString.h"
 #include "core/InspectorFrontend.h"
 #include "core/inspector/InspectorBaseAgent.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
-namespace WTF {
-class String;
-}
-
 namespace blink {
 
 class Resource;
 struct FetchInitiatorInfo;
 class Document;
 class DocumentLoader;
 class FormData;
 class LocalFrame;
 class HTTPHeaderMap;
 class InspectorFrontend;
 class InspectorPageAgent;
-class InstrumentingAgents;
 class JSONObject;
 class KURL;
 class NetworkResourcesData;
-class Page;
 class ResourceError;
 class ResourceLoader;
 class ResourceRequest;
 class ResourceResponse;
 class ThreadableLoaderClient;
 class XHRReplayData;
 class XMLHttpRequest;
 
 class WebSocketHandshakeRequest;
 class WebSocketHandshakeResponse;
@@ skipping 102 matching lines @@
 
     WillBeHeapHashSet<RefPtrWillBeMember<XMLHttpRequest> > m_replayXHRs;
     WillBeHeapHashSet<RefPtrWillBeMember<XMLHttpRequest> > m_replayXHRsToBeDeleted;
     Timer<InspectorResourceAgent> m_removeFinishedReplayXHRTimer;
 };
 
 } // namespace blink
 
 
 #endif // !defined(InspectorResourceAgent_h)