GitLab

1/ Add new Ranker config to field trial testing
2/ Set the default model to be consistent with the 99% Finch group

Bug: 852921
Change-Id: I04497f6a80d810a506e40b7ff9e4d1500ffc191c
Reviewed-on: https://chromium-review.googlesource.com/1179814Reviewed-by: Robert Kaplow (slow) <rkaplow@chromium.org>
Reviewed-by: Michael Martis <martis@chromium.org>
Commit-Queue: anthonyvd <anthonyvd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584791}