GitLab

We send a fake mousemove event to check if there is any change of the
element underneath the mouse cursor, but we should not send the mousemove
event to the DOM, because the mouse does not move.

Bug: 333623
Change-Id: I037ce8f56605afc4b21031095425bdeee8b0aa0c
Reviewed-on: https://chromium-review.googlesource.com/537514Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Commit-Queue: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481919}