GitLab

Simple URI: A class representing simplified URI

This is an interface of simple class that can be used as general URI
parser and builder.
Other CLs:
 - https://crrev.com/c/2118426
 - https://crrev.com/c/2123640
 - https://crrev.com/c/2136192

BUG=chromium:821497
TEST=on my workstation

Change-Id: I143b8fbfb720dab10c6b654317f9d003e52fecdb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2103143
Commit-Queue: Piotr Pawliczek <pawliczek@chromium.org>
Reviewed-by: Sean Kau <skau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#756876}