cros: Refactor of BaseScreen::GetName to BaseScreen::screen_id.

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

 // 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.
 
 #include "chrome/browser/chromeos/login/screens/user_image_model.h"
 
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 
 namespace chromeos {
 
 const char UserImageModel::kContextKeyIsCameraPresent[] = "isCameraPresent";
 const char UserImageModel::kContextKeyProfilePictureDataURL[] =
     "profilePictureDataURL";
 const char UserImageModel::kContextKeySelectedImageURL[] = "selectedImageURL";
 
 UserImageModel::UserImageModel(BaseScreenDelegate* base_screen_delegate)
-    : BaseScreen(base_screen_delegate) {
+    : BaseScreen(base_screen_delegate, WizardController::kUserImageScreenName) {
 }
 
-UserImageModel::~UserImageModel() {
-}
-
-std::string UserImageModel::GetName() const {
-  return WizardController::kUserImageScreenName;
-}
+UserImageModel::~UserImageModel() {}
 
 }  // namespace chromeos