GitLab

Split the omnibox entry into desktop, android, and iOS.

For each separate target,
add all missing features that are being tested in beta or stable.

The only feature I skipped was entity suggestions, which as I understand
it is being revised / reimplemented, so it's not something that should
be actively tested.  (Indeed, we probably should get rid of the
experiment configs that are currently running with this feature, lest
we end up start running a code path in the wild that isn't yet
finished being revised.)

Change-Id: I3c8826c1d00613242b1ab77f66e22574f6532bb0
Reviewed-on: https://chromium-review.googlesource.com/1000029
Commit-Queue: Mark Pearson <mpearson@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550077}