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This CL converts almost all the remaining code to use
AccountConsistencyModeManager. There are a few calls left in tests and
debugging code, which will be converted in a follow-up CL.

TBR=stevenjb

Bug: 777774
Change-Id: Ic2da79f6b332880e2143425c91ab50322b9d542f
Reviewed-on: https://chromium-review.googlesource.com/1099069
Commit-Queue: David Roger <droger@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568000}