GitLab

This adds a bit of padding after the checkboxes and makes entire
rows clickable.

Bug: 887678
Change-Id: I89d6d7f1901170d6178b3b5e0fce228b3d584d00
Reviewed-on: https://chromium-review.googlesource.com/1252524Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: anthonyvd <anthonyvd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595501}