GitLab

Do not go back and show the back gesture affordance while in overview
mode, home screen or not in an ACTIVE session.

Bug: 1002733
Change-Id: Id01ac4fe02fefd94423924ea4871428c29aee497
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1854792Reviewed-by: Xiaoqian Dai <xdai@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Min Chen <minch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705759}