It is time.

ui/compositor/closure_animation_observer.cc

Index: ui/compositor/closure_animation_observer.cc
diff --git a/ui/compositor/closure_animation_observer.cc b/ui/compositor/closure_animation_observer.cc
deleted file mode 100644
index 2ac7f91c8d2a9209786b9a70f0d18266133674d8..0000000000000000000000000000000000000000
--- a/ui/compositor/closure_animation_observer.cc
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2014 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/closure_animation_observer.h"
-
-namespace ui {
-
-ClosureAnimationObserver::ClosureAnimationObserver(const base::Closure& closure)
-    : closure_(closure) {
-  DCHECK(!closure_.is_null());
-}
-
-ClosureAnimationObserver::~ClosureAnimationObserver() {
-}
-
-void ClosureAnimationObserver::OnImplicitAnimationsCompleted() {
-  closure_.Run();
-  delete this;
-}
-
-}  // namespace ui