StyleSheetContents::clearResolvers should clear ScopedStyleResolvers

Source/core/css/StyleSheetContents.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2012 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 600 matching lines @@
     if (!m_ruleSet) {
         m_ruleSet = RuleSet::create();
         m_ruleSet->addRulesFromSheet(this, medium, addRuleFlags);
     }
     return *m_ruleSet.get();
 }
 
 static void clearResolvers(WillBeHeapHashSet<RawPtrWillBeWeakMember<CSSStyleSheet> >& clients)
 {
     for (WillBeHeapHashSet<RawPtrWillBeWeakMember<CSSStyleSheet> >::iterator it = clients.begin(); it != clients.end(); ++it) {
-        if (Document* document = (*it)->ownerDocument())
+        if (Document* document = (*it)->ownerDocument()) {
             document->styleEngine()->clearResolver();
+            document->clearScopedStyleResolver();

[kochi, 2014/07/24 12:46:40]

Probably eventually we should clear the ScopedStyleResolver for document in
StyleEngine.

Looks good for now.

+        }
     }
 }
 
 void StyleSheetContents::clearRuleSet()
 {
     if (StyleSheetContents* parentSheet = parentStyleSheet())
         parentSheet->clearRuleSet();
 
     // Don't want to clear the StyleResolver if the RuleSet hasn't been created
     // since we only clear the StyleResolver so that it's members are properly
@@ skipping 56 matching lines @@
     visitor->trace(m_ownerRule);
     visitor->trace(m_importRules);
     visitor->trace(m_childRules);
     visitor->trace(m_loadingClients);
     visitor->trace(m_completedClients);
     visitor->trace(m_ruleSet);
 #endif
 }
 
 }