GitLab

This is to ensure vibration/vibration-iframe.html passes with another
CL: https://crrev.com/c/2352292
The test should hook disconnect handler in js and make it sure that
vibration stops, but it is not supported yet.

Bug: 1115894, 1100257
Change-Id: Ia4934d4a4537f04bc8f43550c83c8f003c4b7683
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2355638
Commit-Queue: Yuki Yamada <yukiy@chromium.org>
Reviewed-by: Minoru Chikamune <chikamune@chromium.org>
Reviewed-by: Keishi Hattori <keishi@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798573}