Remove even more @keyframes related code.

sky/engine/core/css/CSSPropertySourceData.h

 /*
  * Copyright (c) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 70 matching lines @@
 struct CSSRuleSourceData;
 typedef Vector<RefPtr<CSSRuleSourceData> > RuleSourceDataList;
 typedef Vector<SourceRange> SelectorRangeList;
 
 struct CSSRuleSourceData : public RefCounted<CSSRuleSourceData> {
     enum Type {
         UNKNOWN_RULE = 0,
         STYLE_RULE = 1,
         MEDIA_RULE = 3,
         FONT_FACE_RULE = 4,
-        KEYFRAMES_RULE = 6,
         SUPPORTS_RULE = 8,
         FILTER_RULE = 9
     };
 
     static PassRefPtr<CSSRuleSourceData> create(Type type)
     {
         return adoptRef(new CSSRuleSourceData(type));
     }
 
     static PassRefPtr<CSSRuleSourceData> createUnknown()
@@ skipping 25 matching lines @@
     // Only for CSSMediaRules.
     RuleSourceDataList childRules;
 };
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::SourceRange);
 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::CSSPropertySourceData);
 
 #endif  // SKY_ENGINE_CORE_CSS_CSSPROPERTYSOURCEDATA_H_