Use scoped_ptr<>.Pass() to pass ownership in the remoting protocol code.

remoting/protocol/v2_authenticator.h

 // Copyright (c) 2012 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_PROTOCOL_V2_AUTHENTICATOR_H_
 #define REMOTING_PROTOCOL_V2_AUTHENTICATOR_H_
 
 #include <string>
 #include <queue>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "crypto/p224_spake.h"
 #include "remoting/protocol/authenticator.h"
 
 namespace crypto {
 class RSAPrivateKey;
 }  // namespace crypto
 
 namespace remoting {
 namespace protocol {
 
 class V2Authenticator : public Authenticator {
  public:
   static bool IsEkeMessage(const buzz::XmlElement* message);
 
-  static V2Authenticator* CreateForClient(
+  static scoped_ptr<Authenticator> CreateForClient(
       const std::string& shared_secret);
 
-  static V2Authenticator* CreateForHost(
+  static scoped_ptr<Authenticator> CreateForHost(
       const std::string& local_cert,
       const crypto::RSAPrivateKey& local_private_key,
       const std::string& shared_secret);
 
   virtual ~V2Authenticator();
 
   // Authenticator interface.
   virtual State state() const OVERRIDE;
   virtual void ProcessMessage(const buzz::XmlElement* message) OVERRIDE;
-  virtual buzz::XmlElement* GetNextMessage() OVERRIDE;
-  virtual ChannelAuthenticator* CreateChannelAuthenticator() const OVERRIDE;
+  virtual scoped_ptr<buzz::XmlElement> GetNextMessage() OVERRIDE;
+  virtual scoped_ptr<ChannelAuthenticator>
+      CreateChannelAuthenticator() const OVERRIDE;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(V2AuthenticatorTest, InvalidSecret);
 
   V2Authenticator(crypto::P224EncryptedKeyExchange::PeerType type,
                   const std::string& shared_secret);
 
   bool is_host_side() const;
 
   // Used only for HOST authenticators.
@@ skipping 10 matching lines @@
   std::queue<std::string> pending_messages_;
   std::string auth_key_;
 
   DISALLOW_COPY_AND_ASSIGN(V2Authenticator);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_V2_AUTHENTICATOR_H_