It is time.

ui/wm/core/shadow_types.cc

Index: ui/wm/core/shadow_types.cc
diff --git a/ui/wm/core/shadow_types.cc b/ui/wm/core/shadow_types.cc
deleted file mode 100644
index a7afe89b50d6646b193a8be78cfe0fbf50d3f510..0000000000000000000000000000000000000000
--- a/ui/wm/core/shadow_types.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (c) 2012 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 "ui/wm/core/shadow_types.h"
-
-#include "ui/aura/window_property.h"
-
-DECLARE_WINDOW_PROPERTY_TYPE(wm::ShadowType);
-
-namespace wm {
-
-void SetShadowType(aura::Window* window, ShadowType shadow_type) {
-  window->SetProperty(kShadowTypeKey, shadow_type);
-}
-
-ShadowType GetShadowType(aura::Window* window) {
-  return window->GetProperty(kShadowTypeKey);
-}
-
-DEFINE_WINDOW_PROPERTY_KEY(ShadowType, kShadowTypeKey, SHADOW_TYPE_NONE);
-
-}  // namespace wm