Oilpan: cleanup based on review comments after removal of TreeShared.

Source/core/html/HTMLFormControlElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 47 matching lines @@
     , m_wasFocusedByMouse(false)
 {
     setHasCustomStyleCallbacks();
     associateByParser(form);
 }
 
 HTMLFormControlElement::~HTMLFormControlElement()
 {
 #if !ENABLE(OILPAN)
     setForm(0);
-    hideVisibleValidationMessage();

[haraken, 2014/05/07 12:50:20]

tkent-san: I'm not sure if we can remove this. See
https://codereview.chromium.org/262093006/diff/150001/Source/core/html/HTMLFo...

[Mads Ager (chromium), 2014/05/08 09:08:59]

Kent confirmed that this can be removed on the other code review where I asked a
similar question.

 #endif
 }
 
 String HTMLFormControlElement::formEnctype() const
 {
     const AtomicString& formEnctypeAttr = fastGetAttribute(formenctypeAttr);
     if (formEnctypeAttr.isNull())
         return emptyString();
     return FormSubmission::Attributes::parseEncodingType(formEnctypeAttr);
 }
@@ skipping 337 matching lines @@
 {
     if (m_validationMessage)
         m_validationMessage->requestToHideMessage();
 }
 
 bool HTMLFormControlElement::checkValidity(Vector<RefPtr<FormAssociatedElement> >* unhandledInvalidControls)
 {
     if (!willValidate() || isValidFormControlElement())
         return true;
     // An event handler can deref this object.
-    RefPtr<HTMLFormControlElement> protector(this);
-    RefPtr<Document> originalDocument(document());
+    RefPtrWillBeRawPtr<HTMLFormControlElement> protector(this);
+    RefPtrWillBeRawPtr<Document> originalDocument(document());
     bool needsDefaultAction = dispatchEvent(Event::createCancelable(EventTypeNames::invalid));
     if (needsDefaultAction && unhandledInvalidControls && inDocument() && originalDocument == document())
         unhandledInvalidControls->append(this);
     return false;
 }
 
 bool HTMLFormControlElement::isValidFormControlElement()
 {
     // If the following assertion fails, setNeedsValidityCheck() is not called
     // correctly when something which changes validity is updated.
@@ skipping 60 matching lines @@
 
 void HTMLFormControlElement::setFocus(bool flag)
 {
     LabelableElement::setFocus(flag);
 
     if (!flag && wasChangedSinceLastFormControlChangeEvent())
         dispatchFormControlChangeEvent();
 }
 
 } // namespace Webcore