Remove unnecessary chrome window property util functions.

chrome/browser/ui/ash/property_util.h

Index: chrome/browser/ui/ash/property_util.h
diff --git a/chrome/browser/ui/ash/property_util.h b/chrome/browser/ui/ash/property_util.h
deleted file mode 100644
index 09df56b7e541a3e9a169e3448cf1764f9fccd8a4..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/ash/property_util.h
+++ /dev/null
@@ -1,26 +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.
-
-#ifndef CHROME_BROWSER_UI_ASH_PROPERTY_UTIL_H_
-#define CHROME_BROWSER_UI_ASH_PROPERTY_UTIL_H_
-
-#include "base/strings/string16.h"
-#include "ui/aura/window.h"
-
-// These utility functions set ui::Window properties when running in mash, or
-// they set aura::Window properties when running in classic ash (without mus).
-
-namespace property_util {
-
-// Sets the |value| of the given window |property|; supports limited properties.
-void SetIntProperty(aura::Window* window,
-                    const aura::WindowProperty<int>* property,
-                    int value);
-
-// Set the aura::Window title value or the ui::Window title property value.
-void SetTitle(aura::Window* window, const base::string16& value);
-
-}  // namespace property_util
-
-#endif  // CHROME_BROWSER_UI_ASH_PROPERTY_UTIL_H_