GitLab

Add context menu unit tests

Bug: 942156
Change-Id: Ibb2feb1220098ba43f52b37b2e93b4b6efbc0e09
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1600493Reviewed-by: Tommy Steimel <steimel@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Jazz Xu <jazzhsu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#659167}