GitLab

Stopped when I hit TabObserver but this covers most of the clients

BUG=783819

Change-Id: I499c6105c7c64f09d65bc07436cdb7c2112e7dbf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2572244Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Commit-Queue: Yaron Friedman <yfriedman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834522}