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This CL moves the sync data types management out of
SyncAndSevicesPreferences settings page into a new ManageSyncPreferences
page. This CL also changes the approach used by these fragments to
save/update preference values. Instead of saving the state of data types in
onStop, it is now saved on every change. This simplifies the logic around
updating the state of the preference rows that represent these data types.
This CL also removes "Use sync and all services" toggle from
SyncAndServicesPreferences.

Bug: 914056
Change-Id: I5ac5f40588b4924c4571025006d7de70d3e3d2bd
Reviewed-on: https://chromium-review.googlesource.com/c/1425497
Commit-Queue: Boris Sazonov <bsazonov@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#625310}