Support cancellation of non-yet-running jobs in drive::JobScheduler.

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 55bd7bc4b373a481f468ec6186383b6e667e1fcd..2f35532645966d5026e3a27baa9fdfd4b515d1e9 100644
--- a/chrome/browser/chromeos/drive/job_scheduler.h
+++ b/chrome/browser/chromeos/drive/job_scheduler.h
@@ -208,6 +208,10 @@ class JobScheduler
 
     // The callback to cancel the running job. It is returned from task.Run().
     google_apis::CancelCallback cancel_callback;
+
+    // The callback to notify an error to the client of JobScheduler.
+    // This is used to notify cancel of a job that is not running yet.
+    base::Callback<void(google_apis::GDataErrorCode)> abort;

[hashimoto, 2013/06/20 03:51:54]

nit: Can we make this variable's name a noun? (e.g. abort_callback)

[kinaba, 2013/06/21 01:59:22]

Done.

   };
 
   // Parameters for DriveUploader::ResumeUploadFile.