Implement :valid and :invalid pseudoclass for <form>

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 Apple Inc. All rights reserved.
  *
  * 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 411 matching lines @@
     virtual bool isPickerIndicatorElement() const { return false; }
 #endif
 
     virtual bool isFormControlElement() const { return false; }
     virtual bool isSpinButtonElement() const { return false; }
     virtual bool isTextFormControl() const { return false; }
     virtual bool isOptionalFormControl() const { return false; }
     virtual bool isRequiredFormControl() const { return false; }
     virtual bool isDefaultButtonForForm() const { return false; }
     virtual bool willValidate() const { return false; }
-    virtual bool isValidFormControlElement() { return false; }
+    virtual bool isValidElement() { return false; }
     virtual bool isInRange() const { return false; }
     virtual bool isOutOfRange() const { return false; }
     virtual bool isClearButtonElement() const { return false; }
 
     virtual bool canContainRangeEndPoint() const OVERRIDE { return true; }
 
     // Used for disabled form elements; if true, prevents mouse events from being dispatched
     // to event listeners, and prevents DOMActivate events from being sent at all.
     virtual bool isDisabledFormControl() const { return false; }
 
@@ skipping 409 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif // Element_h