media: Add experimental feature to enable Mojo CDM on desktop Chromium

media/mojo/services/main.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 "base/at_exit.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "media/mojo/services/media_service_factory.h"
 #include "services/service_manager/public/c/main.h"
 #include "services/service_manager/public/cpp/service_runner.h"
 
 MojoResult ServiceMain(MojoHandle mojo_handle) {
   // Enable logging.
-  base::AtExitManager at_exit;
   service_manager::ServiceRunner::InitBaseCommandLine();
 
   logging::LoggingSettings settings;
   settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
   logging::InitLogging(settings);
 
   std::unique_ptr<service_manager::Service> service =
       media::CreateMediaServiceForTesting();
   service_manager::ServiceRunner runner(service.release());
   return runner.Run(mojo_handle, false /* init_base */);
 }