Simplify AuthenticationMethod type and PIN hash handling.

remoting/protocol/negotiating_authenticator_base.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_NEGOTIATING_AUTHENTICATOR_BASE_H_
 #define REMOTING_PROTOCOL_NEGOTIATING_AUTHENTICATOR_BASE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 67 matching lines @@
     return current_method_;
   }
 
  protected:
   static const buzz::StaticQName kMethodAttributeQName;
   static const buzz::StaticQName kSupportedMethodsAttributeQName;
   static const char kSupportedMethodsSeparator;
 
   explicit NegotiatingAuthenticatorBase(Authenticator::State initial_state);
 
-  void AddMethod(const AuthenticationMethod& method);
+  void AddMethod(AuthenticationMethod method);
 
   // Updates |state_| to reflect the current underlying authenticator state.
   // |resume_callback| is called after the state is updated.
   void UpdateState(const base::Closure& resume_callback);
 
   // Gets the next message from |current_authenticator_|, if any, and fills in
   // the 'method' tag with |current_method_|.
   virtual scoped_ptr<buzz::XmlElement> GetNextMessageInternal();
 
   std::vector<AuthenticationMethod> methods_;
-  AuthenticationMethod current_method_;
+  AuthenticationMethod current_method_ = AuthenticationMethod::INVALID;
   scoped_ptr<Authenticator> current_authenticator_;
   State state_;
-  RejectionReason rejection_reason_;
+  RejectionReason rejection_reason_ = INVALID_CREDENTIALS;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NegotiatingAuthenticatorBase);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_NEGOTIATING_AUTHENTICATOR_BASE_H_