Move UserContext to its own file

chrome/browser/chromeos/login/auth/mock_authenticator.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/auth/mock_authenticator.h"
 
 #include "base/bind.h"
-#include "chrome/browser/chromeos/login/users/user.h"
+#include "chrome/browser/chromeos/login/auth/user_context.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 namespace chromeos {
 
 void MockAuthenticator::AuthenticateToLogin(Profile* profile,
                                             const UserContext& user_context) {
   if (expected_username_ == user_context.GetUserID() &&
       expected_password_ == user_context.GetPassword()) {
@@ skipping 70 matching lines @@
 }
 
 void MockAuthenticator::SetExpectedCredentials(
     const std::string& expected_username,
     const std::string& expected_password) {
   expected_username_ = expected_username;
   expected_password_ = expected_password;
 }
 
 }  // namespace chromeos