GitLab

Add strings for upcoming add to home screen in-product help.

Bug: 1144250
Change-Id: I938886c6953ae707de4d76bc036e1b30041fe47c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2510714
Auto-Submit: Theresa  <twellington@chromium.org>
Reviewed-by: Sky Malice <skym@chromium.org>
Commit-Queue: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822826}