Remove left-overs from -webkit-marquee-speed removal.

Source/core/css/parser/CSSPropertyParser.cpp

Index: Source/core/css/parser/CSSPropertyParser.cpp
diff --git a/Source/core/css/parser/CSSPropertyParser.cpp b/Source/core/css/parser/CSSPropertyParser.cpp
index facb105a9918d3b98fa01a3592d71241e4a7dc7e..bbe4497ada385063e9b2b555ae82713b4cc386af 100644
--- a/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/Source/core/css/parser/CSSPropertyParser.cpp
@@ -1124,10 +1124,7 @@ bool CSSPropertyParser::parseValue(CSSPropertyID propId, bool important)
             validPrimitive = validUnit(value, FInteger | FNonNeg);
         break;
     case CSSPropertyInternalMarqueeSpeed:
-        if (id == CSSValueNormal || id == CSSValueSlow || id == CSSValueFast)
-            validPrimitive = true;
-        else
-            validPrimitive = validUnit(value, FTime | FInteger | FNonNeg);
+        validPrimitive = validUnit(value, FInteger | FNonNeg);
         break;
     case CSSPropertyTransform:
     case CSSPropertyWebkitTransform: