Remove canary member from SyncSessionJob

sync/engine/sync_scheduler_impl.h

Index: sync/engine/sync_scheduler_impl.h
diff --git a/sync/engine/sync_scheduler_impl.h b/sync/engine/sync_scheduler_impl.h
index 8f03e8945d811adcea1cd99a3f64b49facb98cbe..663c2ed8e1b7ec078e99d63674f492eb43a68403 100644
--- a/sync/engine/sync_scheduler_impl.h
+++ b/sync/engine/sync_scheduler_impl.h
@@ -171,7 +171,7 @@ class SYNC_EXPORT_PRIVATE SyncSchedulerImpl :
   void ScheduleSyncSessionJob(scoped_ptr<SyncSessionJob> job);
 
   // Invoke the Syncer to perform a sync.
-  bool DoSyncSessionJob(scoped_ptr<SyncSessionJob> job);
+  bool DoSyncSessionJob(scoped_ptr<SyncSessionJob> job, bool is_canary);
 
   // Called after the Syncer has performed the sync represented by |job|, to
   // reset our state.  |exited_prematurely| is true if the Syncer did not
@@ -195,7 +195,7 @@ class SYNC_EXPORT_PRIVATE SyncSchedulerImpl :
   void HandleContinuationError(scoped_ptr<SyncSessionJob> old_job);
 
   // Decide whether we should CONTINUE, SAVE or DROP the job.
-  JobProcessDecision DecideOnJob(const SyncSessionJob& job);
+  JobProcessDecision DecideOnJob(const SyncSessionJob& job, bool is_canary);
 
   // If DecideOnJob decides that |job| should be SAVEd, this function will
   // carry out the task of actually "saving" (or coalescing) the job.
@@ -203,7 +203,8 @@ class SYNC_EXPORT_PRIVATE SyncSchedulerImpl :
 
   // Decide on whether to CONTINUE, SAVE or DROP the job when we are in
   // backoff mode.
-  JobProcessDecision DecideWhileInWaitInterval(const SyncSessionJob& job);
+  JobProcessDecision DecideWhileInWaitInterval(const SyncSessionJob& job,
+                                               bool is_canary);
 
   // 'Impl' here refers to real implementation of public functions, running on
   // |thread_|.