GitLab

- Renames TableViewAccessoryItem/Cell to TableViewImageItem/Cell, and
adds a property that makes the chevron optional.
- Adds tests for the new behavior.
- Uses this new property to hide the chevron on Show Full History in
Recent Tabs.

Bug: 910738
Change-Id: I9aeee17ebab52cbfcedb1c56b5e54221a5d7b2dd
Reviewed-on: https://chromium-review.googlesource.com/c/1358967Reviewed-by: Chris Lu <thegreenfrog@chromium.org>
Commit-Queue: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613256}