Moves mash/wm into ash/mus

mash/wm/bridge/wm_lookup_mus.cc

-// Copyright 2016 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 "mash/wm/bridge/wm_lookup_mus.h"
-
-#include "mash/wm/bridge/wm_globals_mus.h"
-#include "mash/wm/bridge/wm_root_window_controller_mus.h"
-#include "mash/wm/bridge/wm_window_mus.h"
-#include "ui/views/widget/widget.h"
-
-namespace mash {
-namespace wm {
-
-WmLookupMus::WmLookupMus() {
-  WmLookup::Set(this);
-}
-
-WmLookupMus::~WmLookupMus() {
-  if (WmLookupMus::Get() == this)
-    WmLookup::Set(nullptr);
-}
-
-ash::wm::WmRootWindowController*
-WmLookupMus::GetRootWindowControllerWithDisplayId(int64_t id) {
-  return WmGlobalsMus::Get()->GetRootWindowControllerWithDisplayId(id);
-}
-
-ash::wm::WmWindow* WmLookupMus::GetWindowForWidget(views::Widget* widget) {
-  return WmWindowMus::Get(widget);
-}
-
-}  // namespace wm
-}  // namespace mash