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- Records if AwG is current Android autofill service.
- Records if and when the server type predication is available when
  feature is enabled.
- Records if AwG provides the suggestion and if user accepts the
  suggeston.

Bug: 1151542
Change-Id: I246aee27cdef757902351a5e43973bea2e6f15e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612220
Commit-Queue: Michael Bai <michaelbai@chromium.org>
Reviewed-by: Dominic Battré <battre@chromium.org>
Reviewed-by: Shimi Zhang <ctzsm@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842390}