Added nudge source counters to about:sync.

sync/internal_api/sync_manager_impl.h

Index: sync/internal_api/sync_manager_impl.h
diff --git a/sync/internal_api/sync_manager_impl.h b/sync/internal_api/sync_manager_impl.h
index e315b2cff6ac67e28a9bfa6af9b3f352da273b44..4971e7c2f95b3245fdd319e65f7b56a151d71bab 100644
--- a/sync/internal_api/sync_manager_impl.h
+++ b/sync/internal_api/sync_manager_impl.h
@@ -177,6 +177,19 @@ class SyncManagerImpl : public SyncManager,
 
   const SyncScheduler* scheduler() const;
 
+  // Used to ensure that nudge counters in allstatus_ are incremented
+  // every time a nudge is scheduled.
+  void ScheduleNudgeAsync(
+      const base::TimeDelta& delay,
+      NudgeSource source,
+      ModelTypeSet types,
+      const tracked_objects::Location& nudge_location);
+
+  void ScheduleNudgeWithStatesAsync(
+      const base::TimeDelta& delay, NudgeSource source,
+      const ModelTypeStateMap& type_state_map,
+      const tracked_objects::Location& nudge_location);
+
  private:
   friend class SyncManagerTest;
   FRIEND_TEST_ALL_PREFIXES(SyncManagerTest, NudgeDelayTest);