Move code from StyleResolver to ViewportStyleResolver.

Source/core/css/resolver/ViewportStyleResolver.h

 /*
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 34 matching lines @@
 class ViewportStyleResolver : public NoBaseWillBeGarbageCollected<ViewportStyleResolver> {
     DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(ViewportStyleResolver);
 public:
     static PassOwnPtrWillBeRawPtr<ViewportStyleResolver> create(Document* document)
     {
         return adoptPtrWillBeNoop(new ViewportStyleResolver(document));
     }
 
     enum Origin { UserAgentOrigin, AuthorOrigin };
 
+    void collectViewportRules();
     void collectViewportRules(RuleSet*, Origin);
-
     void resolve();
 
     DECLARE_TRACE();
 
 private:
     explicit ViewportStyleResolver(Document*);
 
     void addViewportRule(StyleRuleViewport*, Origin);
 
     float viewportArgumentValue(CSSPropertyID) const;
     Length viewportLengthValue(CSSPropertyID) const;
 
     RawPtrWillBeMember<Document> m_document;
     RefPtrWillBeMember<MutableStylePropertySet> m_propertySet;
     bool m_hasAuthorStyle;
 };
 
 } // namespace blink
 
 #endif // ViewportStyleResolver_h