[Sync] Finish transition to new AndroidSyncSettings interface.

[Sync] Finish transition to new AndroidSyncSettings interface.

This is CL 3/3 in a series; please see http://crrev.com/1138013008 for
more information. Storing references to AndroidSyncSettings is no
longer allowed

BUG=480604
Committed: https://crrev.com/0ee0b47930931ca47aa5100a5927f323ef4589b8
Cr-Commit-Position: refs/heads/master@{#330755}

[maxbogue, 2015-05-20 04:50:50]

maxbogue@chromium.org changed reviewers:
+ nyquist@chromium.org

[maxbogue, 2015-05-20 04:50:50]

Tommy, please review this last change. CC: Nick as an FYI.

[nyquist, 2015-05-20 04:52:22]

lgtm

[maxbogue, 2015-05-20 16:55:17]

The CQ bit was checked by maxbogue@chromium.org

[commit-bot: I haz the power, 2015-05-20 16:55:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1145003002/1

[commit-bot: I haz the power, 2015-05-20 16:59:32]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-20 17:01:21]

Patchset 1 (id:??) landed as
https://crrev.com/0ee0b47930931ca47aa5100a5927f323ef4589b8
Cr-Commit-Position: refs/heads/master@{#330755}