Merge 145034 "Make RuleData support up to 8191 selectors"

Source/WebCore/css/RuleSet.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 60 matching lines @@
     bool hasDocumentSecurityOrigin() const { return m_hasDocumentSecurityOrigin; }
     PropertyWhitelistType propertyWhitelistType() const { return static_cast<PropertyWhitelistType>(m_propertyWhitelistType); }
     // Try to balance between memory usage (there can be lots of RuleData objects) and good filtering performance.
     static const unsigned maximumIdentifierCount = 4;
     const unsigned* descendantSelectorIdentifierHashes() const { return m_descendantSelectorIdentifierHashes; }
 
     void reportMemoryUsage(MemoryObjectInfo*) const;
 
 private:
     StyleRule* m_rule;
-    unsigned m_selectorIndex : 12;
+    unsigned m_selectorIndex : 13;
     // This number was picked fairly arbitrarily. We can probably lower it if we need to.
     // Some simple testing showed <100,000 RuleData's on large sites.
-    unsigned m_position : 19;
+    unsigned m_position : 18;
     unsigned m_hasFastCheckableSelector : 1;
     unsigned m_specificity : 24;
     unsigned m_hasMultipartSelector : 1;
     unsigned m_hasRightmostSelectorMatchingHTMLBasedOnRuleHash : 1;
     unsigned m_containsUncommonAttributeSelector : 1;
     unsigned m_linkMatchType : 2; //  SelectorChecker::LinkMatchMask
     unsigned m_hasDocumentSecurityOrigin : 1;
     unsigned m_propertyWhitelistType : 2;
     // Use plain array instead of a Vector to minimize memory overhead.
     unsigned m_descendantSelectorIdentifierHashes[maximumIdentifierCount];
@@ skipping 77 matching lines @@
 
 inline RuleSet::RuleSet()
     : m_ruleCount(0)
     , m_autoShrinkToFitEnabled(true)
 {
 }
 
 } // namespace WebCore
 
 #endif // RuleSet_h