Files.app: Obtain total bytes of upload task before starting tasks.

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 2440c6d59b7ec5f90cb6ec7afd49edb8ca2709b2..75ecf749ead9647a1a469191e6645f10ff66a2b7 100644
--- a/chrome/browser/chromeos/drive/job_scheduler.h
+++ b/chrome/browser/chromeos/drive/job_scheduler.h
@@ -346,6 +346,11 @@ class JobScheduler
   void OnConnectionTypeChanged(
       net::NetworkChangeNotifier::ConnectionType type) override;
 
+  // Updates total_bytes in JobInfo.
+  void OnGotFileSizeForJob(JobID job_id,
+                           const std::string& histogram_name,
+                           int64* size);
+
   // Get the type of queue the specified job should be put in.
   QueueType GetJobQueueType(JobType type);