Fix few compilation errors on Windows in media/ during Windows GN build.

media/mojo/services/mojo_media_application.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 "base/command_line.h"
 #include "base/logging.h"
+#include "base/strings/utf_string_conversions.h"
 #include "media/mojo/services/mojo_renderer_service.h"
 #include "mojo/application/application_runner_chromium.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/application_connection.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/application/interface_factory_impl.h"
 
 namespace media {
 
@@ skipping 33 matching lines @@
     mojo::BindToRequest(new MojoRendererService(), &request);
   }
 };
 
 }  // namespace media
 
 MojoResult MojoMain(MojoHandle mojo_handle) {
   mojo::ApplicationRunnerChromium runner(new media::MojoMediaApplication);
   return runner.Run(mojo_handle);
 }