Remove WmLookup.

ash/common/system/chromeos/ime_menu/ime_menu_tray.cc

Index: ash/common/system/chromeos/ime_menu/ime_menu_tray.cc
diff --git a/ash/common/system/chromeos/ime_menu/ime_menu_tray.cc b/ash/common/system/chromeos/ime_menu/ime_menu_tray.cc
index 90653113bbdd5b6ef3915f6b7c608fa80b42ced0..71acd3360bd3a6c214cbe57d32119223e15e92a8 100644
--- a/ash/common/system/chromeos/ime_menu/ime_menu_tray.cc
+++ b/ash/common/system/chromeos/ime_menu/ime_menu_tray.cc
@@ -21,7 +21,6 @@
 #include "ash/common/system/tray/tray_popup_item_style.h"
 #include "ash/common/system/tray/tray_popup_utils.h"
 #include "ash/common/system/tray/tray_utils.h"
-#include "ash/common/wm_lookup.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 #include "ash/public/cpp/shell_window_ids.h"
@@ -578,8 +577,7 @@ void ImeMenuTray::OnBeforeBubbleWidgetInit(
     views::Widget* bubble_widget,
     views::Widget::InitParams* params) const {
   // Place the bubble in the same root window as |anchor_widget|.
-  WmLookup::Get()
-      ->GetWindowForWidget(anchor_widget)
+  WmWindow::Get(anchor_widget->GetNativeWindow())
       ->GetRootWindowController()
       ->ConfigureWidgetInitParamsForContainer(
           bubble_widget, kShellWindowId_SettingBubbleContainer, params);