Invalidate CustomScrollbars on having window-inactive 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 43 matching lines @@
     RuleFeatureSet();
     ~RuleFeatureSet();
 
     void add(const RuleFeatureSet&);
     void clear();
 
     void collectFeaturesFromRuleData(const RuleData&);
 
     bool usesSiblingRules() const { return !siblingRules.isEmpty(); }
     bool usesFirstLineRules() const { return m_metadata.usesFirstLineRules; }
+    bool usesWindowInactiveSelector() const { return m_metadata.usesWindowInactiveSelector; }
 
     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
     {
         ASSERT(!attributeName.isEmpty());
         return m_attributeInvalidationSets.contains(attributeName);
     }
 
@@ skipping 27 matching lines @@
 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)
+            , usesWindowInactiveSelector(false)
             , foundSiblingSelector(false)
             , maxDirectAdjacentSelectors(0)
         { }
         void add(const FeatureMetadata& other);
         void clear();
 
         bool usesFirstLineRules;
+        bool usesWindowInactiveSelector;
         bool foundSiblingSelector;
         unsigned maxDirectAdjacentSelectors;
     };
 
     void collectFeaturesFromSelector(const CSSSelector&, FeatureMetadata&);
 
     DescendantInvalidationSet& ensureClassInvalidationSet(const AtomicString& className);
     DescendantInvalidationSet& ensureAttributeInvalidationSet(const AtomicString& attributeName);
     DescendantInvalidationSet& ensureIdInvalidationSet(const AtomicString& attributeName);
     DescendantInvalidationSet& ensurePseudoInvalidationSet(CSSSelector::PseudoType);
@@ skipping 41 matching lines @@
     InvalidationSetMap m_attributeInvalidationSets;
     InvalidationSetMap m_idInvalidationSets;
     PseudoTypeInvalidationSetMap m_pseudoInvalidationSets;
     StyleInvalidator m_styleInvalidator;
 };
 
 
 } // namespace blink
 
 #endif // RuleFeature_h