Reland: [Cast] Consolidate plethora of GYP files into cast.gyp and cast_testing.gypi.

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 <cstdio>
 #include <cstdlib>
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
+#include "base/message_loop/message_loop.h"
 #include "media/cast/test/utility/udp_proxy.h"
 
 int main(int argc, char** argv) {
   if (argc < 5) {
     fprintf(stderr,
             "Usage: udp_proxy <localport> <remotehost> <remoteport> <type>\n"
             "Where type is one of: perfect, wifi, evil\n");
     exit(1);
   }
 
@@ skipping 26 matching lines @@
     exit(1);
   }
 
   printf("Press Ctrl-C when done.\n");
   scoped_ptr<media::cast::test::UDPProxy> proxy(
       media::cast::test::UDPProxy::Create(local_endpoint,
                                           remote_endpoint,
                                           in_pipe.Pass(),
                                           out_pipe.Pass(),
                                           NULL));
-  while (true) {
-    sleep(1000);
-  }
+  base::MessageLoop().Run();  // Run forever.
   return 1;
 }