Revert 194578 "Add ash SessionStateDelegate"

trunk/src/ash/session_state_delegate_stub.cc

-// Copyright (c) 2013 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/session_state_delegate_stub.h"
-
-#include "ash/shell.h"
-#include "ash/shell/example_factory.h"
-
-namespace ash {
-
-SessionStateDelegateStub::SessionStateDelegateStub() : screen_locked_(false) {
-}
-
-SessionStateDelegateStub::~SessionStateDelegateStub() {
-}
-
-bool SessionStateDelegateStub::HasActiveUser() const {
-  return true;
-}
-
-bool SessionStateDelegateStub::IsActiveUserSessionStarted() const {
-  return true;
-}
-
-bool SessionStateDelegateStub::CanLockScreen() const {
-  return true;
-}
-
-bool SessionStateDelegateStub::IsScreenLocked() const {
-  return screen_locked_;
-}
-
-void SessionStateDelegateStub::LockScreen() {
-  shell::CreateLockScreen();
-  screen_locked_ = true;
-  Shell::GetInstance()->UpdateShelfVisibility();
-}
-
-void SessionStateDelegateStub::UnlockScreen() {
-  screen_locked_ = false;
-  Shell::GetInstance()->UpdateShelfVisibility();
-}
-
-}  // namespace ash