[cros] Initialize OOBE in parallel when boot animation is disabled.

ash/shell/shell_delegate_impl.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 "ash/shell/shell_delegate_impl.h"
 
 #include "ash/shell/example_factory.h"
 #include "ash/shell/launcher_delegate_impl.h"
 #include "ash/shell/toplevel_window.h"
 #include "ash/shell_window_ids.h"
@@ skipping 16 matching lines @@
 void ShellDelegateImpl::SetWatcher(WindowWatcher* watcher) {
   watcher_ = watcher;
   if (launcher_delegate_)
     launcher_delegate_->set_watcher(watcher);
 }
 
 bool ShellDelegateImpl::IsUserLoggedIn() {
   return true;
 }
 
-bool ShellDelegateImpl::IsSessionStarted() {
+bool ShellDelegateImpl::IsSessionStarted() const {
   return true;
 }
 
 void ShellDelegateImpl::LockScreen() {
   ash::shell::CreateLockScreen();
   locked_ = true;
   ash::Shell::GetInstance()->UpdateShelfVisibility();
 }
 
 void ShellDelegateImpl::UnlockScreen() {
   locked_ = false;
   ash::Shell::GetInstance()->UpdateShelfVisibility();
 }
 
 bool ShellDelegateImpl::IsScreenLocked() const {
   return locked_;
 }
 
+bool ShellDelegateImpl::IsStatusAreaInitiallyVisible() const {
+  return true;
+}
+
 void ShellDelegateImpl::Shutdown() {
 }
 
 void ShellDelegateImpl::Exit() {
   MessageLoopForUI::current()->Quit();
 }
 
 void ShellDelegateImpl::NewTab() {
 }
 
@@ skipping 62 matching lines @@
 }
 
 void ShellDelegateImpl::OpenFeedbackPage() {
 }
 
 void ShellDelegateImpl::RecordUserMetricsAction(UserMetricsAction action) {
 }
 
 }  // namespace shell
 }  // namespace ash