Clean up forward declarations in Source/core/inspector

Source/core/inspector/InjectedScript.h

 /*
  * Copyright (C) 2012 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 25 matching lines @@
 #include "core/inspector/InjectedScriptBase.h"
 #include "core/inspector/InjectedScriptManager.h"
 #include "core/inspector/ScriptArguments.h"
 #include "wtf/Forward.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class InjectedScriptModule;
 class Node;
-class SerializedScriptValue;
 
 class InjectedScript final : public InjectedScriptBase {
 public:
     InjectedScript();
     virtual ~InjectedScript() { }
 
     void evaluate(
         ErrorString*,
         const String& expression,
         const String& objectGroup,
@@ skipping 50 matching lines @@
     friend InjectedScript InjectedScriptManager::injectedScriptFor(ScriptState*);
     InjectedScript(ScriptValue, InspectedStateAccessCheck);
 
     ScriptValue nodeAsScriptValue(Node*);
 };
 
 
 } // namespace blink
 
 #endif