Shuffles around immersive related classes

ash/wm/immersive_handler_factory.cc

Index: ash/wm/immersive_handler_factory.cc
diff --git a/ash/wm/immersive_handler_factory.cc b/ash/wm/immersive_handler_factory.cc
deleted file mode 100644
index fd4a4c636f35186c61cb9674b0f0447b97bbabdd..0000000000000000000000000000000000000000
--- a/ash/wm/immersive_handler_factory.cc
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2016 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 "ash/wm/immersive_handler_factory.h"
-
-#include "base/logging.h"
-
-namespace ash {
-
-// static
-ImmersiveHandlerFactory* ImmersiveHandlerFactory::instance_ = nullptr;
-
-ImmersiveHandlerFactory::ImmersiveHandlerFactory() {
-  DCHECK(!instance_);
-  instance_ = this;
-}
-
-ImmersiveHandlerFactory::~ImmersiveHandlerFactory() {
-  DCHECK_EQ(instance_, this);
-  instance_ = nullptr;
-}
-
-}  // namespace ash