Web Animations: Fix pseudo element keyframe style resolution crash

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 88 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<RenderStyle> styleForElement(Element*, RenderStyle* parentStyle = 0, StyleSharingBehavior = AllowStyleSharing,
         RuleMatchingBehavior = MatchAllRules);
 
-    PassRefPtr<RenderStyle> styleForKeyframe(Element*, const RenderStyle&, RenderStyle* parentStyle, const StyleKeyframe*, const AtomicString& animationName);
+    PassRefPtr<RenderStyle> styleForKeyframe(Element&, const RenderStyle&, RenderStyle* parentStyle, const StyleKeyframe*, const AtomicString& animationName);
     static PassRefPtrWillBeRawPtr<AnimatableValue> createAnimatableValueSnapshot(Element&, CSSPropertyID, CSSValue&);
     static PassRefPtrWillBeRawPtr<AnimatableValue> createAnimatableValueSnapshot(StyleResolverState&, CSSPropertyID, CSSValue&);
 
     PassRefPtr<RenderStyle> pseudoStyleForElement(Element*, const PseudoStyleRequest&, RenderStyle* parentStyle);
 
     PassRefPtr<RenderStyle> styleForPage(int pageIndex);
     PassRefPtr<RenderStyle> defaultStyleForElement();
     PassRefPtr<RenderStyle> styleForText(Text*);
 
     static PassRefPtr<RenderStyle> styleForDocument(Document&);
@@ skipping 102 matching lines @@
     void matchAuthorRules(Element*, ElementRuleCollector&, bool includeEmptyRules);
     void matchAuthorRulesForShadowHost(Element*, ElementRuleCollector&, bool includeEmptyRules, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>& resolvers, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>& resolversInShadowTree);
     void matchAllRules(StyleResolverState&, ElementRuleCollector&, bool includeSMILProperties);
     void matchUARules(ElementRuleCollector&);
     void collectFeatures();
     void resetRuleFeatures();
 
     bool fastRejectSelector(const RuleData&) const;
 
     void applyMatchedProperties(StyleResolverState&, const MatchResult&);
-    bool applyAnimatedProperties(StyleResolverState&, Element* animatingElement);
+    bool applyAnimatedProperties(StyleResolverState&, const Element* animatingElement);
     void applyCallbackSelectors(StyleResolverState&);
 
     void resolveScopedStyles(const Element*, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>&);
     void collectScopedResolversForHostedShadowTrees(const Element*, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>&);
 
     enum StyleApplicationPass {
         HighPriorityProperties,
         LowPriorityProperties
     };
     template <StyleResolver::StyleApplicationPass pass>
@@ skipping 62 matching lines @@
     OwnPtr<StyleResolverStats> m_styleResolverStatsTotals;
     unsigned m_styleResolverStatsSequence;
 
     // Use only for Internals::updateStyleAndReturnAffectedElementCount.
     unsigned m_accessCount;
 };
 
 } // namespace blink
 
 #endif // StyleResolver_h