Remove WmLookup.

ash/system/web_notification/web_notification_tray_unittest.cc

Index: ash/system/web_notification/web_notification_tray_unittest.cc
diff --git a/ash/system/web_notification/web_notification_tray_unittest.cc b/ash/system/web_notification/web_notification_tray_unittest.cc
index 8cf3917d962e64ee53dee8c3796ecf8b566912ee..0c27f0c33d54eed15ad9856e205745b6fc153c74 100644
--- a/ash/system/web_notification/web_notification_tray_unittest.cc
+++ b/ash/system/web_notification/web_notification_tray_unittest.cc
@@ -15,7 +15,6 @@
 #include "ash/common/system/web_notification/ash_popup_alignment_delegate.h"
 #include "ash/common/test/test_system_tray_delegate.h"
 #include "ash/common/wm/window_state.h"
-#include "ash/common/wm_lookup.h"
 #include "ash/common/wm_window.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/shell.h"
@@ -350,8 +349,7 @@ TEST_F(WebNotificationTrayTest, PopupAndFullscreen) {
   // Put |widget| into fullscreen without forcing the shelf to hide. Currently,
   // this is used by immersive fullscreen and forces the shelf to be auto
   // hidden.
-  WmLookup::Get()
-      ->GetWindowForWidget(widget.get())
+  WmWindow::Get(widget->GetNativeWindow())
       ->GetWindowState()
       ->set_hide_shelf_when_fullscreen(false);
   widget->SetFullscreen(true);