Remove a lot of API surface from Element.

sky/engine/core/dom/shadow/SelectRuleFeatureSet.cpp

 /*
  * Copyright (C) 2012 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 20 matching lines @@
 #include "config.h"
 #include "core/dom/shadow/SelectRuleFeatureSet.h"
 
 #include "core/css/CSSSelector.h"
 
 #include "wtf/BitVector.h"
 
 namespace blink {
 
 SelectRuleFeatureSet::SelectRuleFeatureSet()
-    : m_featureFlags(0)
 {
 }
 
 void SelectRuleFeatureSet::add(const SelectRuleFeatureSet& featureSet)
 {
     m_cssRuleFeatureSet.add(featureSet.m_cssRuleFeatureSet);
-    m_featureFlags |= featureSet.m_featureFlags;
 }
 
 void SelectRuleFeatureSet::clear()
 {
     m_cssRuleFeatureSet.clear();
-    m_featureFlags = 0;
 }
 
 void SelectRuleFeatureSet::collectFeaturesFromSelector(const CSSSelector& selector)
 {
     m_cssRuleFeatureSet.collectFeaturesFromSelector(selector);
 }
 
 bool SelectRuleFeatureSet::checkSelectorsForClassChange(const SpaceSplitString& changedClasses) const
 {
     unsigned changedSize = changedClasses.size();
@@ skipping 37 matching lines @@
 
         // Class was removed.
         if (hasSelectorForClass(oldClasses[i]))
             return true;
     }
     return false;
 }
 
 }