[BackgroundSync] Add max sync event duration to BackgroundSyncParameters

content/public/browser/background_sync_parameters.h

Index: content/public/browser/background_sync_parameters.h
diff --git a/content/public/browser/background_sync_parameters.h b/content/public/browser/background_sync_parameters.h
index 631b943b40f39f6c182c8e90434d8cf2267dcea1..1c1afaeac9f9a39d8b93f8ab747b171912debcdb 100644
--- a/content/public/browser/background_sync_parameters.h
+++ b/content/public/browser/background_sync_parameters.h
@@ -35,6 +35,9 @@ struct CONTENT_EXPORT BackgroundSyncParameters {
   // The minimum time to wait before waking the browser in case the browser
   // closes mid-sync.
   base::TimeDelta min_sync_recovery_time;
+
+  // The maximum amount of time that a sync event can run for.
+  base::TimeDelta max_sync_event_duration;
 };
 
 }  // namespace content