GitLab

The crash happens when the display width is less than about 210 pixels,
and one clicks on the overflow button.

Add a test to prevent future regressions.

Bug: 977043
Change-Id: I8d1fa02eee829bf4ca0d45000b66842dcd2e65a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1808378Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Manu Cornet <manucornet@chromium.org>
Cr-Commit-Position: refs/heads/master@{#697218}