Convert //components/proximity_auth from scoped_ptr to std::unique_ptr

components/proximity_auth/messenger_observer.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_PROXIMITY_AUTH_MESSENGER_OBSERVER_H
 #define COMPONENTS_PROXIMITY_AUTH_MESSENGER_OBSERVER_H
 
+#include <memory>
 #include <string>
 
-#include "base/memory/scoped_ptr.h"
-
 namespace proximity_auth {
 
 struct RemoteStatusUpdate;
 
 // An interface for observing events that happen on a Messenger.
 class MessengerObserver {
  public:
   // Called when sending an "Easy Unlock used"  local event message completes.
   // |success| is true iff the event was sent successfully.
   virtual void OnUnlockEventSent(bool success){};
@@ skipping 10 matching lines @@
   // |success| is true iff the request was made successfully.
   virtual void OnUnlockResponse(bool success){};
 
   // Called when the underlying secure channel disconnects.
   virtual void OnDisconnected(){};
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_MESSENGER_OBSERVER_H