GitLab

It's currently using URLFetcher. It should use SimpleURLLoader
instead to make it eventually work with the network service.

Bug: 872880
Change-Id: Id192f3aee248334e3a40075b0adb190a799eef60
Reviewed-on: https://chromium-review.googlesource.com/1183229Reviewed-by: Dan Erat <derat@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Commit-Queue: Sergio Villar <svillar@igalia.com>
Cr-Commit-Position: refs/heads/master@{#584844}