Minimal feature collector for select selectors.

Source/core/css/RuleFeature.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 40 matching lines @@
 
 class RuleFeatureSet {
     DISALLOW_ALLOCATION();
 public:
     RuleFeatureSet();
     ~RuleFeatureSet();
 
     void add(const RuleFeatureSet&);
     void clear();
 
-    void collectFeaturesFromSelector(const CSSSelector&);
     void collectFeaturesFromRuleData(const RuleData&);
 
     bool usesSiblingRules() const { return !siblingRules.isEmpty(); }
     bool usesFirstLineRules() const { return m_metadata.usesFirstLineRules; }
 
     unsigned maxDirectAdjacentSelectors() const { return m_metadata.maxDirectAdjacentSelectors; }
     void setMaxDirectAdjacentSelectors(unsigned value)  { m_metadata.maxDirectAdjacentSelectors = std::max(value, m_metadata.maxDirectAdjacentSelectors); }
 
     bool hasSelectorForAttribute(const AtomicString& attributeName) const
     {
@@ skipping 26 matching lines @@
     // FIXME: record these internally to this class instead calls from StyleResolver to here.
     void addContentAttr(const AtomicString& attributeName);
 
     StyleInvalidator& styleInvalidator();
 
     void trace(Visitor*);
 
     WillBeHeapVector<RuleFeature> siblingRules;
     WillBeHeapVector<RuleFeature> uncommonAttributeRules;
 
+protected:
+    DescendantInvalidationSet* invalidationSetForSelector(const CSSSelector&);
+
 private:
     typedef WillBeHeapHashMap<AtomicString, RefPtrWillBeMember<DescendantInvalidationSet> > InvalidationSetMap;
     typedef WillBeHeapHashMap<CSSSelector::PseudoType, RefPtrWillBeMember<DescendantInvalidationSet>, WTF::IntHash<unsigned>, WTF::UnsignedWithZeroKeyHashTraits<unsigned> > PseudoTypeInvalidationSetMap;
 
     struct FeatureMetadata {
         FeatureMetadata()
             : usesFirstLineRules(false)
             , foundSiblingSelector(false)
             , maxDirectAdjacentSelectors(0)
         { }
@@ skipping 13 matching lines @@
 
     static InvalidationSetMode invalidationSetModeForSelector(const CSSSelector&);
 
     void collectFeaturesFromSelector(const CSSSelector&, FeatureMetadata&, InvalidationSetMode);
     void collectFeaturesFromSelectorList(const CSSSelectorList*, FeatureMetadata&, InvalidationSetMode);
 
     DescendantInvalidationSet& ensureClassInvalidationSet(const AtomicString& className);
     DescendantInvalidationSet& ensureAttributeInvalidationSet(const AtomicString& attributeName);
     DescendantInvalidationSet& ensureIdInvalidationSet(const AtomicString& attributeName);
     DescendantInvalidationSet& ensurePseudoInvalidationSet(CSSSelector::PseudoType);
-    DescendantInvalidationSet* invalidationSetForSelector(const CSSSelector&);
 
     InvalidationSetMode updateInvalidationSets(const CSSSelector&);
 
     struct InvalidationSetFeatures {
         InvalidationSetFeatures()
             : customPseudoElement(false)
             , treeBoundaryCrossing(false)
             , wholeSubtree(false)
         { }
         Vector<AtomicString> classes;
@@ skipping 26 matching lines @@
 
 template <> struct VectorTraits<blink::RuleFeature> : VectorTraitsBase<blink::RuleFeature> {
     static const bool needsDestruction = false;
     static const bool canInitializeWithMemset = true;
     static const bool canMoveWithMemcpy = true;
 };
 
 } // namespace WTF
 
 #endif // RuleFeature_h