Translate viewport related meta tags into @viewport descriptors as suggested by the CSS Device Adap…

Source/core/css/resolver/StyleResolver.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 148 matching lines @@
 
     ScopedStyleResolver* ensureScopedStyleResolver(const ContainerNode* scope)
     {
         return m_styleTree.ensureScopedStyleResolver(scope ? scope : document());
     }
 
     // FIXME: Used by SharingStyleFinder, but should be removed.
     bool styleSharingCandidateMatchesRuleSet(const ElementResolveContext&, RuleSet*);
 
     const StyleRuleKeyframes* matchScopedKeyframesRule(Element*, const AtomicStringImpl* animationName);
+
     PassRefPtr<RenderStyle> styleForKeyframe(Element*, const RenderStyle*, const StyleKeyframe*, KeyframeValue&);
 
     // These methods will give back the set of rules that matched for a given element (or a pseudo-element).
     enum CSSRuleFilter {
         UAAndUserCSSRules   = 1 << 1,
         AuthorCSSRules      = 1 << 2,
         EmptyCSSRules       = 1 << 3,
         CrossOriginCSSRules = 1 << 4,
         AllButEmptyCSSRules = UAAndUserCSSRules | AuthorCSSRules | CrossOriginCSSRules,
         AllCSSRules         = AllButEmptyCSSRules | EmptyCSSRules,
@@ skipping 129 matching lines @@
         PseudoId ignoreDynamicPseudo = NOPSEUDO;
         if (selectorChecker.match(selectorCheckingContext, ignoreDynamicPseudo, DOMSiblingTraversalStrategy()) == SelectorChecker::SelectorMatches)
             return true;
     }
     return false;
 }
 
 } // namespace WebCore
 
 #endif // StyleResolver_h