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

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 177 matching lines @@
   void SendDriveFileTransferEvent(bool always);
 
   // Manages the list of currently active Drive file transfer jobs.
   struct DriveJobInfoWithStatus {
     DriveJobInfoWithStatus();
     DriveJobInfoWithStatus(const drive::JobInfo& info,
                            const std::string& status);
     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_;
   Profile* profile_;
 
   content::NotificationRegistrar notification_registrar_;
   bool multi_user_window_manager_observer_registered_;
 
   scoped_ptr<DeviceEventRouter> device_event_router_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<EventRouter> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(EventRouter);
 };
 
 }  // namespace file_manager
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_