drive: Change DriveServiceInterface::GetChangeList's callback type to ChangeListCallback

chrome/browser/chromeos/drive/job_scheduler.h

Index: chrome/browser/chromeos/drive/job_scheduler.h
diff --git a/chrome/browser/chromeos/drive/job_scheduler.h b/chrome/browser/chromeos/drive/job_scheduler.h
index 1078287f1f0029df197ee54967d3fa288796cb00..e1d0ff6a69c56e4e1ede5293a4356708b59ddea8 100644
--- a/chrome/browser/chromeos/drive/job_scheduler.h
+++ b/chrome/browser/chromeos/drive/job_scheduler.h
@@ -275,6 +275,13 @@ class JobScheduler
   // Retries the job if needed and returns false. Otherwise returns true.
   bool OnJobDone(JobID job_id, google_apis::GDataErrorCode error);
 
+  // Callback for job finishing with a ChangeListCallback.
+  void OnGetChangeListJobDone(
+      JobID job_id,
+      const google_apis::GetResourceListCallback& callback,
+      google_apis::GDataErrorCode error,
+      scoped_ptr<google_apis::ChangeList> change_list);
+
   // Callback for job finishing with a GetResourceListCallback.
   void OnGetResourceListJobDone(
       JobID job_id,