GitLab

transform-function is changed to transform-list.
<transform-list> is already a space separated list,
so <transform-list>+ is invalid.
parsing functions for transform-form type were moved to
CSSPropertyTransformUtils from CSSPropertyAPITransform.

https://drafts.css-houdini.org/css-properties-values-api-1/#supported-syntax-strings
https://github.com/w3c/css-houdini-drafts/issues/290

BUG=641877

Review-Url: https://codereview.chromium.org/2951763002
Cr-Commit-Position: refs/heads/master@{#481796}