Use std::move() instead of .Pass() in remoting/host

remoting/host/backoff_timer.h

Index: remoting/host/backoff_timer.h
diff --git a/remoting/host/backoff_timer.h b/remoting/host/backoff_timer.h
index 2750ebdda03800a67b339e2c59b5b15d06aee91e..474afcce38b6a99e61b1d5733a7b55e7525ee1fc 100644
--- a/remoting/host/backoff_timer.h
+++ b/remoting/host/backoff_timer.h
@@ -32,7 +32,9 @@ class BackoffTimer {
   // Returns true if the user task may be invoked in the future.
   bool IsRunning() const { return backoff_entry_; }
 
-  void SetTimerForTest(scoped_ptr<base::Timer> timer) { timer_ = timer.Pass(); }
+  void SetTimerForTest(scoped_ptr<base::Timer> timer) {
+    timer_ = std::move(timer);
+  }
 
  private:
   void StartTimer();