Remove a lot of API surface from Element.

sky/engine/core/html/HTMLElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004-2008, 2013, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Motorola Mobility. 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 117 matching lines @@
 void HTMLElement::setDir(const AtomicString& value)
 {
     setAttribute(HTMLNames::dirAttr, value);
 }
 
 bool HTMLElement::isInteractiveContent() const
 {
     return false;
 }
 
-bool HTMLElement::matchesReadOnlyPseudoClass() const
-{
-    return !matchesReadWritePseudoClass();
-}
-
-bool HTMLElement::matchesReadWritePseudoClass() const
-{
-    if (hasAttribute(HTMLNames::contenteditableAttr)) {
-        const AtomicString& value = getAttribute(HTMLNames::contenteditableAttr);
-
-        if (value.isEmpty() || equalIgnoringCase(value, "true") || equalIgnoringCase(value, "plaintext-only"))
-            return true;
-        if (equalIgnoringCase(value, "false"))
-            return false;
-        // All other values should be treated as "inherit".
-    }
-
-    return parentElement() && parentElement()->hasEditableStyle();
-}
-
 const AtomicString& HTMLElement::eventParameterName()
 {
     DEFINE_STATIC_LOCAL(const AtomicString, eventString, ("event", AtomicString::ConstructFromLiteral));
     return eventString;
 }
 
 v8::Handle<v8::Object> HTMLElement::wrap(v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return createV8HTMLWrapper(this, creationContext, isolate);
 }
 
 } // namespace blink