GitLab

- This CL adds a chrome://flags flag for crrev.com/c/1474281.
- Additionally, in about_flags.cc and flag-metadata.json, it orders
omnibox-ui-use-generic-search-engine-icon below
omnibox-ui-show-suffix-on-all-search-suggestions, as in
omnibox_field_trial.cc.

Bug: 931836
Change-Id: If5a1a104c1bece5396c54630a55cb4190ed872cb
Reviewed-on: https://chromium-review.googlesource.com/c/1487363Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Kevin Bailey <krb@chromium.org>
Commit-Queue: manuk hovanesian <manukh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#635544}