GitLab

This extends AutocompleteMatch with explanatory text as to where this
suggestion came from. This is currently purely based on the
AutocompleteMatchType.

These are placeholder strings meant for development only.

Bug: 929477
Change-Id: Ia8bb271b6f7ad4b2848011bec98d16d4f64f64de
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1574886
Commit-Queue: Tommy Li <tommycli@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652865}