Convert //remoting to use std::unique_ptr

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 a75a8d30bdf38616be69099bda8df1208f8a4705..5f4ab36e039bf5836e64b11c6b822d288cf124ab 100644
--- a/remoting/host/backoff_timer.h
+++ b/remoting/host/backoff_timer.h
@@ -5,9 +5,10 @@
 #ifndef REMOTING_HOST_BACKOFF_TIMER_H_
 #define REMOTING_HOST_BACKOFF_TIMER_H_
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/timer/timer.h"
 #include "net/base/backoff_entry.h"
 
@@ -33,17 +34,17 @@ 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);
+  void SetTimerForTest(std::unique_ptr<base::Timer> timer);
 
  private:
   void StartTimer();
   void OnTimerFired();
 
-  scoped_ptr<base::Timer> timer_;
+  std::unique_ptr<base::Timer> timer_;
   base::Closure user_task_;
   tracked_objects::Location posted_from_;
   net::BackoffEntry::Policy backoff_policy_ = {};
-  scoped_ptr<net::BackoffEntry> backoff_entry_;
+  std::unique_ptr<net::BackoffEntry> backoff_entry_;
 
   DISALLOW_COPY_AND_ASSIGN(BackoffTimer);
 };