Implement oauth token external handler checking.

chrome/browser/chromeos/login/users/fake_chrome_user_manager.h

 // Copyright 2015 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 CHROME_BROWSER_CHROMEOS_LOGIN_USERS_FAKE_CHROME_USER_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USERS_FAKE_CHROME_USER_MANAGER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 41 matching lines @@
   UserFlow* GetCurrentUserFlow() const override;
   UserFlow* GetUserFlow(const std::string& email) const override;
   void ResetUserFlow(const std::string& email) override;
   user_manager::UserList GetUsersAllowedForSupervisedUsersCreation()
       const override;
   void SwitchActiveUser(const std::string& email) override;
   const std::string& GetOwnerEmail() const override;
   void SessionStarted() override;
   void RemoveUser(const std::string& email,
                   user_manager::RemoveUserDelegate* delegate) override;
+  bool FindKnownUserPrefs(const user_manager::UserID& user_id,
+                          const base::DictionaryValue** out_value) override;
+  void UpdateKnownUserPrefs(const user_manager::UserID& user_id,
+                            const base::DictionaryValue& values,
+                            bool clear) override;
 
   void set_owner_email(const std::string& owner_email) {
     owner_email_ = owner_email;
   }
 
   void set_bootstrap_manager(BootstrapManager* bootstrap_manager) {
     bootstrap_manager_ = bootstrap_manager;
   }
 
   void set_multi_profile_user_controller(
@@ skipping 19 matching lines @@
   // Specific flows by user e-mail.
   // Keys should be canonicalized before access.
   FlowMap specific_flows_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeChromeUserManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USERS_FAKE_CHROME_USER_MANAGER_H_