GitLab

We were showing the nav widget in the right conditions, but we were
not hiding it aggressively enough.

Add tests to prevent future regressions.

BUG=992336

Change-Id: I4d19473f514b8979c940daa008e16a43e3de9773
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1761492Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Manu Cornet <manucornet@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688608}