GitLab

This re-lands f72a8099
"WebLayer: add tests for DownloadDelegate"

Bug: none
Change-Id: Ie18d955d2754baa9a91d742844ba42fdbc823d93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1872461
Commit-Queue: Evan Stade <estade@chromium.org>
Reviewed-by: Clark DuVall <cduvall@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708061}