Remove GetPlatformDefaultEGLNativeDisplay() function.

ui/gl/gl_surface_egl_ozone.cc

Index: ui/gl/gl_surface_egl_ozone.cc
diff --git a/ui/gl/gl_surface_egl_ozone.cc b/ui/gl/gl_surface_egl_ozone.cc
deleted file mode 100644
index 6ceabf14c071314890a55553854bb62bb26d289b..0000000000000000000000000000000000000000
--- a/ui/gl/gl_surface_egl_ozone.cc
+++ /dev/null
@@ -1,18 +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 "ui/gl/gl_surface_egl.h"
-
-#include "ui/ozone/public/ozone_platform.h"
-#include "ui/ozone/public/surface_factory_ozone.h"
-
-namespace gl {
-
-EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
-  return ui::OzonePlatform::GetInstance()
-      ->GetSurfaceFactoryOzone()
-      ->GetNativeDisplay();
-}
-
-}  // namespace gl