Use a converter for building style value for 'transform'

third_party/WebKit/Source/core/css/CSSProperties.in

Index: third_party/WebKit/Source/core/css/CSSProperties.in
diff --git a/third_party/WebKit/Source/core/css/CSSProperties.in b/third_party/WebKit/Source/core/css/CSSProperties.in
index e544c5b38afb3b3312e2a33ea6bffcea7573b785..456e3512a8d069fd80cd9fe0ce67b774aedf113b 100644
--- a/third_party/WebKit/Source/core/css/CSSProperties.in
+++ b/third_party/WebKit/Source/core/css/CSSProperties.in
@@ -350,7 +350,7 @@ text-transform inherited
 text-underline-position runtime_flag=CSS3TextDecorations, inherited, type_name=TextUnderlinePosition
 top typedom_types=[Length], keywords=[auto], supports_percentage, interpolable, initial=initialOffset, converter=convertLengthOrAuto
 touch-action converter=convertFlags<TouchAction>, type_name=TouchAction
-transform typedom_types=[Transform], keywords=[none], interpolable, custom_value
+transform typedom_types=[Transform], keywords=[none], interpolable, converter=convertTransformOperations
 transform-origin interpolable, converter=convertTransformOrigin
 transform-style name_for_methods=TransformStyle3D
 translate runtime_flag=CSSIndependentTransformProperties, converter=convertTranslate, interpolable