NotForReview: Implement zero/one-copy texture for ozone freon using Intel DRM

ui/ozone/platform/drm/host/drm_device_handle.cc

 // Copyright 2015 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/ozone/platform/drm/host/drm_device_handle.h"
 
 #include <fcntl.h>
 #include <xf86drm.h>
 #include <xf86drmMode.h>
 
@@ skipping 50 matching lines @@
 }
 
 bool DrmDeviceHandle::IsValid() const {
   return file_.is_valid();
 }
 
 base::ScopedFD DrmDeviceHandle::PassFD() {
   return file_.Pass();
 }
 
+int DrmDeviceHandle::GetFD() {
+  return file_.get();
+}
+
 }  // namespace ui