Remove calls to deprecated MessageLoop methods in media.

media/cast/test/utility/udp_proxy_main.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 <stdint.h>
 #include <cstdio>
 #include <cstdlib>
 #include <deque>
 #include <string>
 #include <utility>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "media/cast/test/utility/udp_proxy.h"
 #include "net/base/ip_address.h"
 
 class ByteCounter {
  public:
   ByteCounter() : bytes_(0), packets_(0) {
     push(base::TimeTicks::Now());
   }
@@ skipping 166 matching lines @@
       &(g_counter.Get().out_pipe_output_counter));
 
   printf("Press Ctrl-C when done.\n");
   std::unique_ptr<media::cast::test::UDPProxy> proxy(
       media::cast::test::UDPProxy::Create(local_endpoint, remote_endpoint,
                                           std::move(in_pipe),
                                           std::move(out_pipe), NULL));
   base::MessageLoop message_loop;
   g_counter.Get().last_printout = base::TimeTicks::Now();
   CheckByteCounters();
-  message_loop.Run();
+  base::RunLoop().Run();
   return 1;
 }