Enrich fileBrowserPrivate.onFileTransfersUpdated event to support displaying total number of jobs.

chrome/browser/chromeos/extensions/file_manager/event_router.h

Index: chrome/browser/chromeos/extensions/file_manager/event_router.h
diff --git a/chrome/browser/chromeos/extensions/file_manager/event_router.h b/chrome/browser/chromeos/extensions/file_manager/event_router.h
index 42e65b60b5f4865cdf63fe543ebc6ae7bf0b849f..c2194a6234490948d26035b089505ea3f8072e1e 100644
--- a/chrome/browser/chromeos/extensions/file_manager/event_router.h
+++ b/chrome/browser/chromeos/extensions/file_manager/event_router.h
@@ -195,9 +195,20 @@ class EventRouter
     drive::JobInfo job_info;
     std::string status;
   };
+
+  // Sends onFileTranferUpdated to extensions if needed. The request is send
+  // after enough time has passed from the previous event.
+  void SendDriveFileTransferEventDelay(

[hirono, 2014/08/28 08:31:38]

Could you integrate this method with SendDriveFileTransferEvent?
Currently the difference between SendDriveFileTransferDelay(is_delayed = false)
and SendDriveFileTransferEvent is not clear.

[iseki, 2014/08/29 01:58:00]

Done.

+      const DriveJobInfoWithStatus& job_info_with_status,
+      base::Time call_time,
+      bool is_delayed);
+
   std::map<drive::JobID, DriveJobInfoWithStatus> drive_jobs_;
   base::Time last_file_transfer_event_;
   base::Time last_copy_progress_event_;
+  base::Time last_post_delayed_task_;
+
+  const base::TimeDelta startup_time_delta_;
 
   WatcherMap file_watchers_;
   scoped_ptr<PrefChangeRegistrar> pref_change_registrar_;