Add API to sync_driver::SyncService for iOS

Add API to sync_driver::SyncService for iOS

This CL moves several methods from ProfileSyncService to
sync_driver::SyncService so that they can be called on iOS.

Committed: https://crrev.com/d8f8dc8f620e8b02e1ad8c3b9b88c262af0188c5
Cr-Commit-Position: refs/heads/master@{#324211}

[droger, 2015-04-07 15:51:13]

droger@chromium.org changed reviewers:
+ zea@chromium.org

[Nicolas Zea, 2015-04-07 16:57:31]

LGTM with a request

https://codereview.chromium.org/1067843002/diff/20001/components/sync_driver/...
File components/sync_driver/sync_service.h (right):

https://codereview.chromium.org/1067843002/diff/20001/components/sync_driver/...
components/sync_driver/sync_service.h:54: virtual bool
IsSyncEnabledAndLoggedIn() = 0;
Could you organize all these at the bottom of the file? I think a number of them
shouldn't really be here, and should be refactored away, but that's not
something we need to do in this patch.

Putting them all under a comment of "TODO(sync): these methods were pulled from
ProfileSyncService, and should be evaluated to see if they should stay" would
help make that clear.

[droger, 2015-04-08 07:38:50]

Thanks for the review, done.

[droger, 2015-04-08 07:39:06]

The CQ bit was checked by droger@chromium.org

[droger, 2015-04-08 07:39:07]

The patchset sent to the CQ was uploaded after l-g-t-m from zea@chromium.org
Link to the patchset: https://codereview.chromium.org/1067843002/#ps40001
(title: "Review comments")

[commit-bot: I haz the power, 2015-04-08 07:39:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1067843002/40001

[commit-bot: I haz the power, 2015-04-08 11:10:21]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-04-08 11:11:25]

Patchset 3 (id:??) landed as
https://crrev.com/d8f8dc8f620e8b02e1ad8c3b9b88c262af0188c5
Cr-Commit-Position: refs/heads/master@{#324211}