Add support to resolve unprefixed CSS animations properties.

Source/core/rendering/style/KeyframeList.cpp

Index: Source/core/rendering/style/KeyframeList.cpp
diff --git a/Source/core/rendering/style/KeyframeList.cpp b/Source/core/rendering/style/KeyframeList.cpp
index 9d20a1c666aff68b3440579d4c0239a5a0e0326a..093d796b6e752f2439071b23f143db517a619f44 100644
--- a/Source/core/rendering/style/KeyframeList.cpp
+++ b/Source/core/rendering/style/KeyframeList.cpp
@@ -36,7 +36,7 @@ void KeyframeValue::addProperties(const StylePropertySet* propertySet)
         CSSPropertyID property = propertySet->propertyAt(i).id();
         // Timing-function within keyframes is special, because it is not animated; it just
         // describes the timing function between this keyframe and the next.
-        if (property != CSSPropertyWebkitAnimationTimingFunction)
+        if (property != CSSPropertyWebkitAnimationTimingFunction && property != CSSPropertyAnimationTimingFunction)
             addProperty(property);
     }
 }