GitLab

Clear touch screen devices after each test so that touch screen
configuration doesn't interfere with the next test's setup.
Specifically, having a touch screen device causes the virtual
keyboard to be enabled before Shell is done initializing.

Bug: 939177
Change-Id: I8e24cc9ab2f425cdc8d9a3b4d11b0a4e1fd6d9f4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1507250Reviewed-by: James Cook <jamescook@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638690}