Convert //remoting to use std::unique_ptr

remoting/host/host_extension.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 REMOTING_HOST_HOST_EXTENSION_H_
 #define REMOTING_HOST_HOST_EXTENSION_H_
 
+#include <memory>
 #include <string>
 
-#include "base/memory/scoped_ptr.h"
 
 namespace remoting {
 
 class ClientSessionControl;
 class HostExtensionSession;
 
 namespace protocol {
 class ClientStub;
 }
 
 // Extends |ChromotingHost| with new functionality, and can use extension
 // messages to communicate with the client.
 class HostExtension {
  public:
   virtual ~HostExtension() {}
 
   // Returns the name of the capability for this extension. This is merged into
   // the capabilities the host reports to the client, to determine whether a
   // HostExtensionSession should be created for a particular session.
   // Returning an empty string indicates that the extension is not associated
   // with a capability.
   virtual std::string capability() const = 0;
 
   // Creates an extension session, which can handle extension messages for a
   // client session.
   // |client_session_control| may be used to e.g. disconnect the session.
   // |client_stub| may be used to send messages to the session.
   // Both interfaces are valid for the lifetime of the |HostExtensionSession|.
-  virtual scoped_ptr<HostExtensionSession> CreateExtensionSession(
+  virtual std::unique_ptr<HostExtensionSession> CreateExtensionSession(
       ClientSessionControl* client_session_control,
       protocol::ClientStub* client_stub) = 0;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_HOST_EXTENSION_H_