Add support for unprefixed CSS Transforms

Source/core/css/StylePropertySerializer.cpp

Index: Source/core/css/StylePropertySerializer.cpp
diff --git a/Source/core/css/StylePropertySerializer.cpp b/Source/core/css/StylePropertySerializer.cpp
index d1ab84000b4f953dcf2a7d5a6f44b2f588bd47b8..f3e2a69a18279549ba9c22a61ab323a22d509d66 100644
--- a/Source/core/css/StylePropertySerializer.cpp
+++ b/Source/core/css/StylePropertySerializer.cpp
@@ -313,6 +313,7 @@ String StylePropertySerializer::getPropertyValue(CSSPropertyID propertyID) const
         return getShorthandValue(webkitTextEmphasisShorthand());
     case CSSPropertyWebkitTextStroke:
         return getShorthandValue(webkitTextStrokeShorthand());
+    case CSSPropertyTransformOrigin:

[Julien - ping for review, 2014/03/21 03:57:25]

Wouldn't that make us return the prefixed property shorthand in this case if
both prefixed / unprefixed are defined?

[dstockwell, 2014/03/24 21:40:56]

I see. I'll look into removing this.

     case CSSPropertyWebkitTransformOrigin:
         return getShorthandValue(webkitTransformOriginShorthand());
     case CSSPropertyWebkitTransition: