[BackgroundSync Cleanup] Remove periodic sync code

content/common/background_sync_service.mojom

Index: content/common/background_sync_service.mojom
diff --git a/content/common/background_sync_service.mojom b/content/common/background_sync_service.mojom
index d1b0cd1089cf65e9049b08958198f98bec242538..5826cfce8bd555ae0c437ab5c8ef01e8ee161928 100644
--- a/content/common/background_sync_service.mojom
+++ b/content/common/background_sync_service.mojom
@@ -36,15 +36,15 @@ interface BackgroundSyncService {
   Register(SyncRegistration options, int64 service_worker_registration_id,
            bool requested_from_service_worker)
       => (BackgroundSyncError err, SyncRegistration options);
-  GetRegistration(BackgroundSyncPeriodicity periodicity, string tag,
+  GetRegistration(string tag,

[iclelland, 2016/01/22 19:20:42]

Combine with next line?

[jkarlin, 2016/01/22 19:45:46]

Thanks, git cl format doesn't handle mojom yet :)

                   int64 service_worker_registration_id)
       => (BackgroundSyncError err, SyncRegistration? registration);
-  GetRegistrations(BackgroundSyncPeriodicity periodicity,
+  GetRegistrations(

[iclelland, 2016/01/22 19:20:42]

Ditto

[jkarlin, 2016/01/22 19:45:46]

Done.

                    int64 service_worker_registration_id)
       => (BackgroundSyncError err, array<SyncRegistration> registrations);
   Unregister(int64 handle_id, int64 service_worker_registration_id)
       => (BackgroundSyncError err);
-  GetPermissionStatus(BackgroundSyncPeriodicity periodicity,
+  GetPermissionStatus(

[iclelland, 2016/01/22 19:20:42]

Ditto

[jkarlin, 2016/01/22 19:45:46]

Done.

                       int64 service_worker_registration_id)
       => (BackgroundSyncError err, PermissionStatus status);
   DuplicateRegistrationHandle(int64 handle_id)