GitLab

See https://bugs.chromium.org/p/chromium/issues/detail?id=733612#c6
for details.

Also add tests both for windows and non-windows.

Bug: 733612
Change-Id: Id656635a5fc79ea8f805658873599b526e764406
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1796572Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Caleb Rouleau <crouleau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#695429}