Remove authenticated_ fields from stubs.

remoting/host/user_authenticator_fake.h

 // Copyright (c) 2011 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_USER_AUTHENTICATOR_FAKE_H_
 #define REMOTING_HOST_USER_AUTHENTICATOR_FAKE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "remoting/host/user_authenticator.h"
 
 namespace remoting {
 
-// Temporary stub for platforms where this hasn't been implemented yet.
-
-// TODO(lambroslambrou): Implement properly on those platforms, then
-// delete this stub when it's no longer needed.
+// A fake UserAuthenticator, which accepts all but one user/password pair.
 class UserAuthenticatorFake : public UserAuthenticator {
  public:
   UserAuthenticatorFake();
   virtual ~UserAuthenticatorFake();
 
   virtual bool Authenticate(const std::string& username,
                             const std::string& password);
 
+  // Get the user/password pair that a UserAuthenticatorFake rejects.
+  static const char* fail_username();
+  static const char* fail_password();
+
  private:
   DISALLOW_COPY_AND_ASSIGN(UserAuthenticatorFake);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_USER_AUTHENTICATOR_FAKE_H_