Remove OS_CHROMEOS from ui/ash code

chrome/browser/ui/ash/session_state_delegate_views.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 "chrome/browser/ui/ash/session_state_delegate_views.h"
-
-#include "base/logging.h"
-#include "base/strings/string16.h"
-#include "base/strings/utf_string_conversions.h"
-#include "components/user_manager/empty_user_info.h"
-#include "ui/gfx/image/image_skia.h"
-
-SessionStateDelegate::SessionStateDelegate() {
-}
-
-SessionStateDelegate::~SessionStateDelegate() {
-}
-
-int SessionStateDelegate::GetMaximumNumberOfLoggedInUsers() const {
-  return 3;
-}
-
-int SessionStateDelegate::NumberOfLoggedInUsers() const {
-  return 1;
-}
-
-bool SessionStateDelegate::IsActiveUserSessionStarted() const {
-  return true;
-}
-
-bool SessionStateDelegate::CanLockScreen() const {
-  return false;
-}
-
-bool SessionStateDelegate::IsScreenLocked() const {
-  return false;
-}
-
-bool SessionStateDelegate::ShouldLockScreenBeforeSuspending() const {
-  return false;
-}
-
-void SessionStateDelegate::LockScreen() {
-}
-
-void SessionStateDelegate::UnlockScreen() {
-}
-
-bool SessionStateDelegate::IsUserSessionBlocked() const {
-  return false;
-}
-
-ash::SessionStateDelegate::SessionState SessionStateDelegate::GetSessionState()
-    const {
-  return SESSION_STATE_ACTIVE;
-}
-
-const user_manager::UserInfo* SessionStateDelegate::GetUserInfo(
-    ash::UserIndex index) const {
-  static const user_manager::UserInfo* kUserInfo =
-      new user_manager::EmptyUserInfo();
-  return kUserInfo;
-}
-
-bool SessionStateDelegate::ShouldShowAvatar(aura::Window* window) const {
-  return false;
-}
-
-gfx::ImageSkia SessionStateDelegate::GetAvatarImageForWindow(
-    aura::Window* window) const {
-  return gfx::ImageSkia();
-}
-
-void SessionStateDelegate::SwitchActiveUser(const AccountId& account_id) {
-  NOTIMPLEMENTED();
-}
-
-void SessionStateDelegate::CycleActiveUser(CycleUser cycle_user) {
-  NOTIMPLEMENTED();
-}
-
-bool SessionStateDelegate::IsMultiProfileAllowedByPrimaryUserPolicy() const {
-  return true;
-}
-
-void SessionStateDelegate::AddSessionStateObserver(
-    ash::SessionStateObserver* observer) {
-  NOTIMPLEMENTED();
-}
-
-void SessionStateDelegate::RemoveSessionStateObserver(
-    ash::SessionStateObserver* observer) {
-  NOTIMPLEMENTED();
-}