Add histograms about files copied or movied files from or to Drive.

chrome/browser/chromeos/drive/job_scheduler.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_DRIVE_JOB_SCHEDULER_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_JOB_SCHEDULER_H_
 
 #include <vector>
 
 #include "base/id_map.h"
@@ skipping 370 matching lines @@
 
   // The list of queued job info indexed by job IDs.
   typedef IDMap<JobEntry, IDMapOwnPointer> JobIDMap;
   JobIDMap job_map_;
 
   // The list of observers for the scheduler.
   ObserverList<JobListObserver> observer_list_;
 
   EventLogger* logger_;
   DriveServiceInterface* drive_service_;
+  base::SequencedTaskRunner* blocking_task_runner_;
   scoped_ptr<DriveUploaderInterface> uploader_;
 
   PrefService* pref_service_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<JobScheduler> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(JobScheduler);
 };
 
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_JOB_SCHEDULER_H_