Implement computed style for animation shorthand and align parsing with the spec.

Source/core/css/CSSParser-in.cpp

Index: Source/core/css/CSSParser-in.cpp
diff --git a/Source/core/css/CSSParser-in.cpp b/Source/core/css/CSSParser-in.cpp
index ee73ceef792b1fbfa22a2c0387b240af85a7c388..c8105e6befeb62ff717b3632b887a3cb08d8a383 100644
--- a/Source/core/css/CSSParser-in.cpp
+++ b/Source/core/css/CSSParser-in.cpp
@@ -3089,7 +3089,7 @@ void CSSParser::addAnimationValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> r
 bool CSSParser::parseAnimationShorthand(CSSPropertyID propId, bool important)
 {
     const StylePropertyShorthand& animationProperties = parsingShorthandForProperty(propId);
-    const unsigned numProperties = 7;
+    const unsigned numProperties = 8;
 
     // The list of properties in the shorthand should be the same
     // length as the list with animation name in last position, even though they are
@@ -3129,10 +3129,6 @@ bool CSSParser::parseAnimationShorthand(CSSPropertyID propId, bool important)
                     break;
                 }
             }
-
-            // There are more values to process but 'none' or 'all' were already defined as the animation property, the declaration becomes invalid.
-            if (!context.animationPropertyKeywordAllowed() && context.hasCommittedFirstAnimation())
-                return false;
         }
 
         // if we didn't find at least one match, this is an