GitLab

Previously it was implemented as an iron-icon-button + paper-ripple
inside a <a> element, which was problematic (infinite ripples showing
when holding down the enter key).

By leveraging cr-icon-button the bug above is fixed. As a side effect
the focus indicator changes from an outline to a ripple, which will
change back once cr-icon-button itself will transition from ripples to
outlines for focus (soon).

Fixed: 1167155
Change-Id: Ic899c251b3c56bf7b73fcde8682afa73b9918730
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2644461
Commit-Queue: John Lee <johntlee@chromium.org>
Auto-Submit: dpapad <dpapad@chromium.org>
Reviewed-by: John Lee <johntlee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846224}