CSS Transforms: Implement transform-style

Source/core/css/resolver/StyleBuilderCustom.cpp

Index: Source/core/css/resolver/StyleBuilderCustom.cpp
diff --git a/Source/core/css/resolver/StyleBuilderCustom.cpp b/Source/core/css/resolver/StyleBuilderCustom.cpp
index 199ca603f7dfa4a064441a0fd6ce4e1b0f1e906f..0926dfddb2b3d53b1b5825b3d5dac925245d0c59 100644
--- a/Source/core/css/resolver/StyleBuilderCustom.cpp
+++ b/Source/core/css/resolver/StyleBuilderCustom.cpp
@@ -1746,7 +1746,6 @@ void StyleBuilder::oldApplyProperty(CSSPropertyID id, StyleResolverState& state,
     case CSSPropertyPerspectiveOrigin:
     case CSSPropertyTransform:
     case CSSPropertyTransformOrigin:
-    case CSSPropertyTransformStyle:
         ASSERT_NOT_REACHED();
         break;
     // These properties are aliased and we already applied the property on the prefixed version.
@@ -1971,6 +1970,7 @@ void StyleBuilder::oldApplyProperty(CSSPropertyID id, StyleResolverState& state,
     case CSSPropertyWebkitTransformOriginX:
     case CSSPropertyWebkitTransformOriginY:
     case CSSPropertyWebkitTransformOriginZ:
+    case CSSPropertyTransformStyle:
     case CSSPropertyWebkitTransformStyle:
     case CSSPropertyWebkitTransitionDelay:
     case CSSPropertyWebkitTransitionDuration: