GitLab

The overview gesture is changed when the reverse scrolling option
is turned off in M87. The notification should be shown when the
user turns off the reverse scrolling.

Bug: 1107183
Change-Id: I4f1113a815d1594a4428834406471a2fb577d1e6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2436949Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Xiaodan Zhu <zxdan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811737}