Migrate PeopleHandler to use SyncUserSettings

SyncUserSettings is a new class that encapsulates all the
user-configurable knobs for Sync. It replaces a bunch of setters
and getters directly on the SyncService.

Bug: 884159
Change-Id: I0d689d5a07a17895ddf93463a7896fdf1484b3dd
Reviewed-on: https://chromium-review.googlesource.com/c/1286452
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607533}
1 file changed