Oilpan: Prepare to move FormSubmission to Oilpan heap.

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 30 matching lines @@
 }
 
 namespace WebCore {
 
 class Document;
 class Event;
 class FormData;
 struct FrameLoadRequest;
 class HTMLFormElement;
 
-class FormSubmission : public RefCounted<FormSubmission> {
+class FormSubmission : public RefCountedWillBeGarbageCollectedFinalized<FormSubmission> {
 public:
     enum Method { GetMethod, PostMethod, DialogMethod };
 
     class Attributes {
         WTF_MAKE_NONCOPYABLE(Attributes);
     public:
         Attributes()
             : m_method(GetMethod)
             , m_isMultiPartForm(false)
             , m_encodingType("application/x-www-form-urlencoded", AtomicString::ConstructFromLiteral)
@@ skipping 24 matching lines @@
     private:
         Method m_method;
         bool m_isMultiPartForm;
 
         KURL m_action;
         AtomicString m_target;
         AtomicString m_encodingType;
         String m_acceptCharset;
     };
 
-    static PassRefPtr<FormSubmission> create(HTMLFormElement*, const Attributes&, PassRefPtrWillBeRawPtr<Event>, FormSubmissionTrigger);
+    static PassRefPtrWillBeRawPtr<FormSubmission> create(HTMLFormElement*, const Attributes&, PassRefPtrWillBeRawPtr<Event>, FormSubmissionTrigger);
+    void trace(Visitor*);
 
     void populateFrameLoadRequest(FrameLoadRequest&);
 
     KURL requestURL() const;
 
     Method method() const { return m_method; }
     const KURL& action() const { return m_action; }
     const AtomicString& target() const { return m_target; }
     void clearTarget() { m_target = nullAtom; }
     FormState* state() const { return m_formState.get(); }
     FormData* data() const { return m_formData.get(); }
     Event* event() const { return m_event.get(); }
 
     void setReferrer(const Referrer& referrer) { m_referrer = referrer; }
     void setOrigin(const String& origin) { m_origin = origin; }
 
     const String& result() const { return m_result; }
 
 private:
     FormSubmission(Method, const KURL& action, const AtomicString& target, const AtomicString& contentType, PassRefPtrWillBeRawPtr<FormState>, PassRefPtr<FormData>, const String& boundary, PassRefPtrWillBeRawPtr<Event>);
     // FormSubmission for DialogMethod
     FormSubmission(const String& result);
 
     // FIXME: Hold an instance of Attributes instead of individual members.
     Method m_method;
     KURL m_action;
     AtomicString m_target;
     AtomicString m_contentType;
-    RefPtrWillBePersistent<FormState> m_formState;
+    RefPtrWillBeMember<FormState> m_formState;
     RefPtr<FormData> m_formData;
     String m_boundary;
-    RefPtrWillBePersistent<Event> m_event;
+    RefPtrWillBeMember<Event> m_event;
     Referrer m_referrer;
     String m_origin;
     String m_result;
 };
 
 }
 
 #endif // FormSubmission_h