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

chrome/browser/chromeos/drive/job_list.h

Index: chrome/browser/chromeos/drive/job_list.h
diff --git a/chrome/browser/chromeos/drive/job_list.h b/chrome/browser/chromeos/drive/job_list.h
index ca6b53d6aaa6a074580cd2e380968f2f22bb2651..1123bbc7531dc85f28d532e68bbfe6da9d5a3693 100644
--- a/chrome/browser/chromeos/drive/job_list.h
+++ b/chrome/browser/chromeos/drive/job_list.h
@@ -43,6 +43,9 @@ std::string JobTypeToString(JobType type);
 
 // Current state of the job.
 enum JobState {
+  // The job is newed and file data, but not yet queued.
+  STATE_NEW,
+
   // The job is queued, but not yet executed.
   STATE_NONE,
 
@@ -89,6 +92,9 @@ struct JobInfo {
 
   // Returns the string representation of the job info.
   std::string ToString() const;
+
+  // Total number of job.
+  size_t num_total_jobs;
 };
 
 // Checks if |job_info| represents a job for currently active file transfer.