Clean up forward declarations in Source/core/loader

Source/core/loader/FormSubmission.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 18 matching lines @@
  */
 
 #ifndef FormSubmission_h
 #define FormSubmission_h
 
 #include "core/loader/FormState.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/Referrer.h"
 
-namespace WTF{
-class TextEncoding;
-}
-
 namespace blink {
 
-class Document;
 class Event;
 class FormData;
 struct FrameLoadRequest;
 class HTMLFormElement;
 
 class FormSubmission : public RefCountedWillBeGarbageCollectedFinalized<FormSubmission> {
 public:
     enum Method { GetMethod, PostMethod, DialogMethod };
 
     class Attributes {
@@ skipping 72 matching lines @@
     String m_boundary;
     RefPtrWillBeMember<Event> m_event;
     Referrer m_referrer;
     String m_origin;
     String m_result;
 };
 
 }
 
 #endif // FormSubmission_h