[Ozone] Update GYP and GN to include a DRM platform

media/ozone/media_ozone_platform.cc

 // 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 "media/ozone/media_ozone_platform.h"
 
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
 #include "ui/ozone/platform_object.h"
 #include "ui/ozone/platform_selection.h"
@@ skipping 18 matching lines @@
 // generate_constructor_list.py script. They should be removed once the
 // internal Ozone platforms decide to actually implement their media specifics.
 MediaOzonePlatform* CreateMediaOzonePlatformCaca() {
   return new MediaOzonePlatformStub;
 }
 
 MediaOzonePlatform* CreateMediaOzonePlatformDri() {
   return new MediaOzonePlatformStub;
 }
 
+MediaOzonePlatform* CreateMediaOzonePlatformDrm() {
+  return new MediaOzonePlatformStub;
+}
+
 MediaOzonePlatform* CreateMediaOzonePlatformEgltest() {
   return new MediaOzonePlatformStub;
 }
 
 MediaOzonePlatform* CreateMediaOzonePlatformGbm() {
   return new MediaOzonePlatformStub;
 }
 
 MediaOzonePlatform* CreateMediaOzonePlatformTest() {
   return new MediaOzonePlatformStub;
@@ skipping 35 matching lines @@
       ui::PlatformObject<MediaOzonePlatform>::Create();
 
   // TODO(spang): Currently need to leak this object.
   CHECK_EQ(instance_, platform.release());
 }
 
 // static
 MediaOzonePlatform* MediaOzonePlatform::instance_;
 
 }  // namespace media