[Sync] Add support for server controlled nudge delays

sync/test/engine/fake_sync_scheduler.h

Index: sync/test/engine/fake_sync_scheduler.h
diff --git a/sync/test/engine/fake_sync_scheduler.h b/sync/test/engine/fake_sync_scheduler.h
index 68000339bf304664a7d273f0fb784d319e6c5dcb..6abc4026154c870b3779a1f8cf13c67079d51320 100644
--- a/sync/test/engine/fake_sync_scheduler.h
+++ b/sync/test/engine/fake_sync_scheduler.h
@@ -22,15 +22,12 @@ class FakeSyncScheduler : public SyncScheduler {
   virtual void Start(Mode mode) OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual void ScheduleLocalNudge(
-      const base::TimeDelta& desired_delay,
       ModelTypeSet types,
       const tracked_objects::Location& nudge_location) OVERRIDE;
   virtual void ScheduleLocalRefreshRequest(
-      const base::TimeDelta& desired_delay,
       ModelTypeSet types,
       const tracked_objects::Location& nudge_location) OVERRIDE;
   virtual void ScheduleInvalidationNudge(
-      const base::TimeDelta& desired_delay,
       syncer::ModelType type,
       scoped_ptr<InvalidationInterface> interface,
       const tracked_objects::Location& nudge_location) OVERRIDE;
@@ -39,7 +36,6 @@ class FakeSyncScheduler : public SyncScheduler {
   virtual void ScheduleInitialSyncNudge(syncer::ModelType model_type) OVERRIDE;
   virtual void SetNotificationsEnabled(bool notifications_enabled) OVERRIDE;
 
-  virtual base::TimeDelta GetSessionsCommitDelay() const OVERRIDE;
   virtual void OnCredentialsUpdated() OVERRIDE;
   virtual void OnConnectionStatusChange() OVERRIDE;
 
@@ -54,8 +50,8 @@ class FakeSyncScheduler : public SyncScheduler {
       const base::TimeDelta& new_interval) OVERRIDE;
   virtual void OnReceivedLongPollIntervalUpdate(
       const base::TimeDelta& new_interval) OVERRIDE;
-  virtual void OnReceivedSessionsCommitDelay(
-      const base::TimeDelta& new_delay) OVERRIDE;
+  virtual void OnReceivedCustomNudgeDelays(
+      const std::map<ModelType, base::TimeDelta>& nudge_delays) OVERRIDE;
   virtual void OnReceivedClientInvalidationHintBufferSize(int size) OVERRIDE;
   virtual void OnSyncProtocolError(
       const SyncProtocolError& error) OVERRIDE;