GitLab

The handler can now support checking for different types of digital
asset links, including web targets.

Also includes some minor stylistic improvements.

Bug: 1043970
Change-Id: Icb651573a98201c810e53f74cea91a225a48cac0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2037673Reviewed-by: Peter Conn <peconn@chromium.org>
Commit-Queue: Rayan Kanso <rayankans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738583}