Only support AddFeatures invalidation set mode for :host or :any in a rightmost selector

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 111 matching lines @@
         unsigned maxDirectAdjacentSelectors;
         HashSet<AtomicString> idsInRules;
     };
 
     enum InvalidationSetMode {
         AddFeatures,
         UseLocalStyleChange,
         UseSubtreeStyleChange
     };
 
-    static InvalidationSetMode supportsClassDescendantInvalidation(const CSSSelector&);
+    static InvalidationSetMode getInvalidationSetMode(const CSSSelector&);

[esprehn, 2014/04/02 00:20:58]

We don't usually use "get" like this, invalidationSetMode() or
invalidationSetModeForSelector() or something is what we usually do

[chrishtr, 2014/04/02 04:19:50]

Done.

 
     void collectFeaturesFromSelector(const CSSSelector&, FeatureMetadata&, InvalidationSetMode);
     void collectFeaturesFromSelectorList(const CSSSelectorList*, FeatureMetadata&, InvalidationSetMode);
 
     DescendantInvalidationSet& ensureClassInvalidationSet(const AtomicString& className);
     DescendantInvalidationSet& ensureAttributeInvalidationSet(const AtomicString& attributeName);
     DescendantInvalidationSet* invalidationSetForSelector(const CSSSelector&);
 
     InvalidationSetMode updateInvalidationSets(const CSSSelector&);
 
@@ skipping 14 matching lines @@
     InvalidationSetMap m_classInvalidationSets;
     InvalidationSetMap m_attributeInvalidationSets;
     bool m_targetedStyleRecalcEnabled;
     StyleInvalidator m_styleInvalidator;
 };
 
 
 } // namespace WebCore
 
 #endif // RuleFeature_h