GitLab

Using build-in util URL function to add path and query to the url
instead of using StringAppendF.

Bug: 
Change-Id: Ie62bff86da96e62bf41ed6097adbe43956efe99f
Reviewed-on: https://chromium-review.googlesource.com/775934Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Commit-Queue: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517446}