GitLab

Show toast when scan is canceled.

http://screen/A6FWUDiuK9pdp8T

Bug: 1059779
Change-Id: Icae5c87cf2ff27e8fbf76ae3d97e48548275855c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2558967
Commit-Queue: Gavin Williams <gavinwill@chromium.org>
Reviewed-by: Jesse Schettler <jschettler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#832235}