GitLab

The WebUI pages should only require HTML Imports at this point,
and not Shadow DOM v0 or Custom Elements v0. Limit to just that.

Bug: 1111843, 937746
Change-Id: Ib61e38475957e045fb5ecd38dc761f156f55aa53
Cq-Do-Not-Cancel-Tryjobs: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2512381Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Mason Freed <masonfreed@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824721}