It is time.

ui/wm/core/wm_core_switches.cc

Index: ui/wm/core/wm_core_switches.cc
diff --git a/ui/wm/core/wm_core_switches.cc b/ui/wm/core/wm_core_switches.cc
deleted file mode 100644
index 12fbfcca9df3c0d5ff40ddd9dbdc322dee4eba00..0000000000000000000000000000000000000000
--- a/ui/wm/core/wm_core_switches.cc
+++ /dev/null
@@ -1,16 +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/wm_core_switches.h"
-
-#include "base/command_line.h"
-
-namespace wm {
-namespace switches {
-
-// If present animations are disabled.
-const char kWindowAnimationsDisabled[] = "wm-window-animations-disabled";
-
-}  // namespace switches
-}  // namespace wm