Beef up keyframe animation LayoutTest

Source/core/css/CSSKeyframeRule.h

 /*
  * Copyright (C) 2007, 2008, 2012 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 28 matching lines @@
 class StyleKeyframe : public RefCounted<StyleKeyframe> {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     static PassRefPtr<StyleKeyframe> create()
     {
         return adoptRef(new StyleKeyframe());
     }
     ~StyleKeyframe();
 
     String keyText() const { return m_key; }
+    // FIXME: Should we trim whitespace?
+    // FIXME: Should we leave keyText unchanged when attempting to set to an
+    // invalid string?
     void setKeyText(const String& s) { m_key = s; }
 
     void getKeys(Vector<float>& keys) const   { parseKeyString(m_key, keys); }
 
     const StylePropertySet* properties() const { return m_properties.get(); }
     MutableStylePropertySet* mutableProperties();
     void setProperties(PassRefPtr<StylePropertySet>);
 
     String cssText() const;
 
@@ skipping 29 matching lines @@
 
     RefPtr<StyleKeyframe> m_keyframe;
     mutable RefPtr<StyleRuleCSSStyleDeclaration> m_propertiesCSSOMWrapper;
 
     friend class CSSKeyframesRule;
 };
 
 } // namespace WebCore
 
 #endif // CSSKeyframeRule_h