Recalc styles on resize if we have viewport units.

Source/WebCore/css/StyleSheetContents.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 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 74 matching lines @@
 
     void setIsUserStyleSheet(bool b) { m_isUserStyleSheet = b; }
     bool isUserStyleSheet() const { return m_isUserStyleSheet; }
     void setHasSyntacticallyValidCSSHeader(bool b) { m_hasSyntacticallyValidCSSHeader = b; }
     bool hasSyntacticallyValidCSSHeader() const { return m_hasSyntacticallyValidCSSHeader; }
 
     void parserAddNamespace(const AtomicString& prefix, const AtomicString& uri);
     void parserAppendRule(PassRefPtr<StyleRuleBase>);
     void parserSetEncodingFromCharsetRule(const String& encoding); 
     void parserSetUsesRemUnits(bool b) { m_usesRemUnits = b; }
+    void parserSetUsesViewportUnits(bool b) { m_usesViewportUnits = b; }
 
     void clearRules();
 
     bool hasCharsetRule() const { return !m_encodingFromCharsetRule.isNull(); }
     String encodingFromCharsetRule() const { return m_encodingFromCharsetRule; }
     // Rules other than @charset and @import.
     const Vector<RefPtr<StyleRuleBase> >& childRules() const { return m_childRules; }
     const Vector<RefPtr<StyleRuleImport> >& importRules() const { return m_importRules; }
 
     void notifyLoadedSheet(const CachedCSSStyleSheet*);
     
     StyleSheetContents* parentStyleSheet() const;
     StyleRuleImport* ownerRule() const { return m_ownerRule; }
     void clearOwnerRule() { m_ownerRule = 0; }
     
     // Note that href is the URL that started the redirect chain that led to
     // this style sheet. This property probably isn't useful for much except
     // the JavaScript binding (which needs to use this value for security).
     String originalURL() const { return m_originalURL; }
     const KURL& baseURL() const { return m_parserContext.baseURL; }
 
     unsigned ruleCount() const;
     StyleRuleBase* ruleAt(unsigned index) const;
 
     bool usesRemUnits() const { return m_usesRemUnits; }
+    bool usesViewportUnits() const { return m_usesViewportUnits; }
 
     unsigned estimatedSizeInBytes() const;
     
     bool wrapperInsertRule(PassRefPtr<StyleRuleBase>, unsigned index);
     void wrapperDeleteRule(unsigned index);
 
     PassRefPtr<StyleSheetContents> copy() const { return adoptRef(new StyleSheetContents(*this)); }
 
     void registerClient(CSSStyleSheet*);
     void unregisterClient(CSSStyleSheet*);
@@ skipping 24 matching lines @@
     Vector<RefPtr<StyleRuleImport> > m_importRules;
     Vector<RefPtr<StyleRuleBase> > m_childRules;
     typedef HashMap<AtomicString, AtomicString> PrefixNamespaceURIMap;
     PrefixNamespaceURIMap m_namespaces;
 
     bool m_loadCompleted : 1;
     bool m_isUserStyleSheet : 1;
     bool m_hasSyntacticallyValidCSSHeader : 1;
     bool m_didLoadErrorOccur : 1;
     bool m_usesRemUnits : 1;
+    bool m_usesViewportUnits : 1;
     bool m_isMutable : 1;
     bool m_isInMemoryCache : 1;
     
     CSSParserContext m_parserContext;
 
     Vector<CSSStyleSheet*> m_clients;
 };
 
 } // namespace
 
 #endif