drive: Pass TaskRunner to DriveUploader explicitly

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 cc2c3715696c708920655486580dd1c2bb5f81c0..30563ba4ca0fc74579c1daa8a7da747884dcfdec 100644
--- a/chrome/browser/chromeos/drive/job_scheduler.h
+++ b/chrome/browser/chromeos/drive/job_scheduler.h
@@ -19,6 +19,10 @@
 
 class Profile;
 
+namespace base {
+class SeqencedTaskRunner;
+}
+
 namespace drive {
 
 // The JobScheduler is responsible for queuing and scheduling drive
@@ -48,7 +52,8 @@ class JobScheduler
       public JobListInterface {
  public:
   JobScheduler(Profile* profile,
-               DriveServiceInterface* drive_service);
+               DriveServiceInterface* drive_service,
+               base::SequencedTaskRunner* blocking_task_runner);
   virtual ~JobScheduler();
 
   // JobListInterface overrides.