GitLab

Fix check in 'Manage with Drive' action, and add test to ensure it
doesn't regress again. Also added getLastVisitedUrl() in util.js to get
the URL opened by the Manage in Drive button.

Bug: 831480
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I382a662607103d60a5c9a7c58643eff0f9f62106
Reviewed-on: https://chromium-review.googlesource.com/1058884
Commit-Queue: Sasha Morrissey <sashab@chromium.org>
Reviewed-by: Naoki Fukino <fukino@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559441}