Don't resolve non-local -webkit-clip-path references as local
Whether the reference was local or not was disregarded, meaning that
any URL with a valid fragment part could potential result in a valid
clip - regardless of whether it was local or not. I.e foo.svg#bar would
reference an element with the id 'bar' in the local document.
Check if the URL reference resolver flagged the reference as being local,
and only pass a non-null fragment if it was.
BUG=629826
Review-Url: https://codereview.chromium.org/2174813003
Cr-Commit-Position: refs/heads/master@{#407300}
3 files changed
