Revert of ChromeOS login webui refactoring: split user selection/gaia login screens.

chrome/browser/chromeos/login/screens/user_selection_screen.cc

-// 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.
-
-#include "chrome/browser/chromeos/login/screens/user_selection_screen.h"
-
-#include "base/logging.h"
-#include "chrome/browser/chromeos/login/screens/screen_observer.h"
-#include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
-
-namespace chromeos {
-
-UserSelectionScreen::UserSelectionScreen() : handler_(NULL) {
-}
-
-UserSelectionScreen::~UserSelectionScreen() {
-}
-
-void UserSelectionScreen::SetHandler(LoginDisplayWebUIHandler* handler) {
-  handler_ = handler;
-}
-
-void UserSelectionScreen::Init(const UserList& users) {
-  users_ = users;
-}
-
-void UserSelectionScreen::OnBeforeUserRemoved(const std::string& username) {
-  for (UserList::iterator it = users_.begin(); it != users_.end(); ++it) {
-    if ((*it)->email() == username) {
-      users_.erase(it);
-      break;
-    }
-  }
-}
-
-void UserSelectionScreen::OnUserRemoved(const std::string& username) {
-  if (!handler_)
-    return;
-
-  handler_->OnUserRemoved(username);
-}
-
-void UserSelectionScreen::OnUserImageChanged(const User& user) {
-  if (!handler_)
-    return;
-  handler_->OnUserImageChanged(user);
-  // TODO(antrim) : updateUserImage(user.email())
-}
-
-const UserList& UserSelectionScreen::GetUsers() const {
-  return users_;
-}
-
-}  // namespace chromeos