GitLab

For a tab that is requesting its mobile version site, and is not
originated from ARC context, return to its normal version site when
exiting tablet mode.

Bug: 953577
Change-Id: Ifa1f3b694ae5b237b80ea912f7e1b981b7d0debb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1637181
Commit-Queue: Xiaoqian Dai <xdai@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664799}