It is time.

ui/compositor/scoped_animation_duration_scale_mode.cc

Index: ui/compositor/scoped_animation_duration_scale_mode.cc
diff --git a/ui/compositor/scoped_animation_duration_scale_mode.cc b/ui/compositor/scoped_animation_duration_scale_mode.cc
deleted file mode 100644
index 5d146f18520b426df8fab78283bdfab21ff9da74..0000000000000000000000000000000000000000
--- a/ui/compositor/scoped_animation_duration_scale_mode.cc
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright (c) 2013 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/compositor/scoped_animation_duration_scale_mode.h"
-
-namespace ui {
-
-// static
-ScopedAnimationDurationScaleMode::DurationScaleMode
-    ScopedAnimationDurationScaleMode::duration_scale_mode_ =
-        ScopedAnimationDurationScaleMode::NORMAL_DURATION;
-
-}  // namespace ui