When adding a supervised user, ensure the shelf position is at the bottom.

chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.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/supervised/supervised_user_creation_screen.h"
 
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/shell.h"
 #include "base/rand_util.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/camera_detector.h"
 #include "chrome/browser/chromeos/login/error_screens_histogram_helper.h"
 #include "chrome/browser/chromeos/login/existing_user_controller.h"
 #include "chrome/browser/chromeos/login/screen_manager.h"
 #include "chrome/browser/chromeos/login/screens/base_screen_delegate.h"
 #include "chrome/browser/chromeos/login/screens/error_screen.h"
 #include "chrome/browser/chromeos/login/screens/network_error.h"
 #include "chrome/browser/chromeos/login/signin_specifics.h"
 #include "chrome/browser/chromeos/login/supervised/supervised_user_authentication.h"
 #include "chrome/browser/chromeos/login/supervised/supervised_user_creation_controller.h"
 #include "chrome/browser/chromeos/login/supervised/supervised_user_creation_controller_new.h"
 #include "chrome/browser/chromeos/login/supervised/supervised_user_creation_flow.h"
+#include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/chromeos/login/users/avatar/user_image_manager.h"
 #include "chrome/browser/chromeos/login/users/chrome_user_manager.h"
 #include "chrome/browser/chromeos/login/users/supervised_user_manager.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/supervised_user/legacy/supervised_user_shared_settings_service.h"
 #include "chrome/browser/supervised_user/legacy/supervised_user_shared_settings_service_factory.h"
 #include "chrome/browser/supervised_user/legacy/supervised_user_sync_service.h"
 #include "chrome/browser/supervised_user/legacy/supervised_user_sync_service_factory.h"
 #include "chrome/browser/supervised_user/supervised_user_constants.h"
 #include "chrome/grit/generated_resources.h"
@@ skipping 334 matching lines @@
   DBusThreadManager::Get()
       ->GetSessionManagerClient()
       ->NotifySupervisedUserCreationStarted();
   manager_signin_in_progress_ = false;
   DCHECK(controller_.get());
   // For manager user, move desktop to locked container so that windows created
   // during the user image picker step are below it.
   ash::Shell::GetInstance()->
       desktop_background_controller()->MoveDesktopToLockedContainer();
 
+  // Hide the status area and the control bar, since they will show up at the
+  // logged in users's preferred location, which could be on the left or right
+  // side of the screen.
+  LoginDisplayHost* default_host = LoginDisplayHost::default_host();
+  default_host->SetStatusAreaVisible(false);
+  default_host->GetOobeUI()->GetCoreOobeActor()->ShowControlBar(false);
+
   controller_->SetManagerProfile(manager_profile);
   if (actor_)
     actor_->ShowUsernamePage();
 
   last_page_ = kNameOfNewUserParametersScreen;
   CHECK(!sync_service_);
   sync_service_ = SupervisedUserSyncServiceFactory::GetForProfile(
       manager_profile);
   sync_service_->AddObserver(this);
   OnSupervisedUsersChanged();
@@ skipping 237 matching lines @@
     selected_image_ = user_manager::User::USER_IMAGE_EXTERNAL;
   } else {
     NOTREACHED() << "Unexpected image type: " << image_type;
   }
 }
 
 void SupervisedUserCreationScreen::OnImageAccepted() {
 }
 
 }  // namespace chromeos