Remove some unused code

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 42 matching lines @@
 class CSSValue;
 class ContainerNode;
 class Document;
 class Element;
 class Interpolation;
 class MediaQueryEvaluator;
 class RuleData;
 class ScopedStyleResolver;
 class StylePropertySet;
 class StyleRule;
-class StyleRuleKeyframe;
 class StyleRulePage;
 class ViewportStyleResolver;
 
 class MatchResult;
 
 enum StyleSharingBehavior {
     AllowStyleSharing,
     DisallowStyleSharing,
 };
 
@@ skipping 16 matching lines @@
     // FIXME: StyleResolver should not be keeping tree-walk state.
     // These should move to some global tree-walk state, or should be contained in a
     // TreeWalkContext or similar which is passed in to StyleResolver methods when available.
     // Using these during tree walk will allow style selector to optimize child and descendant selector lookups.
     void pushParentElement(Element&);
     void popParentElement(Element&);
 
     PassRefPtr<ComputedStyle> styleForElement(Element*, const ComputedStyle* parentStyle = 0, StyleSharingBehavior = AllowStyleSharing,
         RuleMatchingBehavior = MatchAllRules);
 
-    PassRefPtr<ComputedStyle> styleForKeyframe(Element&, const ComputedStyle&, const ComputedStyle* parentStyle, const StyleRuleKeyframe*, const AtomicString& animationName);
     static PassRefPtrWillBeRawPtr<AnimatableValue> createAnimatableValueSnapshot(Element&, const ComputedStyle* baseStyle, CSSPropertyID, CSSValue*);
     static PassRefPtrWillBeRawPtr<AnimatableValue> createAnimatableValueSnapshot(StyleResolverState&, CSSPropertyID, CSSValue*);
 
     PassRefPtr<ComputedStyle> pseudoStyleForElement(Element*, const PseudoStyleRequest&, const ComputedStyle* parentStyle);
 
     PassRefPtr<ComputedStyle> styleForPage(int pageIndex);
     PassRefPtr<ComputedStyle> styleForText(Text*);
 
     static PassRefPtr<ComputedStyle> styleForDocument(Document&);
 
@@ skipping 164 matching lines @@
 
     OwnPtr<StyleResolverStats> m_styleResolverStats;
 
     // Use only for Internals::updateStyleAndReturnAffectedElementCount.
     unsigned m_accessCount;
 };
 
 } // namespace blink
 
 #endif // StyleResolver_h