user_manager component: Add UserManagerBase class.

chrome/browser/chromeos/login/users/mock_user_manager.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/users/mock_user_manager.h"
 
 #include "chrome/browser/chromeos/login/users/fake_supervised_user_manager.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 
 namespace chromeos {
@@ skipping 10 matching lines @@
 }
 
 const user_manager::UserList& MockUserManager::GetUsers() const {
   return user_list_;
 }
 
 const user_manager::User* MockUserManager::GetLoggedInUser() const {
   return user_list_.empty() ? NULL : user_list_.front();
 }
 
 user_manager::User* MockUserManager::GetLoggedInUser() {

[Dmitry Polukhin, 2014/07/28 09:32:39]

const?

[Nikita (slow), 2014/07/29 09:27:27]

../../chrome/browser/chromeos/login/users/user_manager.h:188:31: error:
functions that differ only in their return type cannot be overloaded
  virtual user_manager::User* GetLoggedInUser() const = 0;

This is because there're two functions:

const user_manager::User* MockUserManager::GetLoggedInUser() const;
user_manager::User* MockUserManager::GetLoggedInUser();

I'll do a separate spot-check (not in this CL though) to understand why certain
callers need non-const return type.

   return user_list_.empty() ? NULL : user_list_.front();
 }
 
 user_manager::UserList MockUserManager::GetUnlockUsers() const {
   return user_list_;
 }
 
-const std::string& MockUserManager::GetOwnerEmail() {
+const std::string& MockUserManager::GetOwnerEmail() const {
   return GetLoggedInUser()->email();
 }
 
 const user_manager::User* MockUserManager::GetActiveUser() const {
   return GetLoggedInUser();
 }
 
 user_manager::User* MockUserManager::GetActiveUser() {

[Dmitry Polukhin, 2014/07/28 09:32:38]

const?

[Nikita (slow), 2014/07/29 09:27:27]

Same here.

   return GetLoggedInUser();
 }
 
 const user_manager::User* MockUserManager::GetPrimaryUser() const {
   return GetLoggedInUser();
 }
 
 MultiProfileUserController* MockUserManager::GetMultiProfileUserController() {
   return NULL;
 }
@@ skipping 38 matching lines @@
 
 void MockUserManager::ClearUserList() {
   // Can't use STLDeleteElements because of the protected destructor of User.
   user_manager::UserList::iterator user;
   for (user = user_list_.begin(); user != user_list_.end(); ++user)
     delete *user;
   user_list_.clear();
 }
 
 }  // namespace chromeos