media: Quit MojoMediaApplication when no service is bound.

mojo/application/public/cpp/lib/application_impl.cc

Index: mojo/application/public/cpp/lib/application_impl.cc
diff --git a/mojo/application/public/cpp/lib/application_impl.cc b/mojo/application/public/cpp/lib/application_impl.cc
index bafabe276fbc04eb61da9300ebc3412fbd1577e8..c47fa23a86c26ad0f59f1a126ae6d95032150fe9 100644
--- a/mojo/application/public/cpp/lib/application_impl.cc
+++ b/mojo/application/public/cpp/lib/application_impl.cc
@@ -59,6 +59,12 @@ ApplicationImpl::~ApplicationImpl() {
 
 ApplicationConnection* ApplicationImpl::ConnectToApplication(
     mojo::URLRequestPtr request) {
+  return ConnectToApplication(request.Pass(), base::Bind(&base::DoNothing));
+}
+
+ApplicationConnection* ApplicationImpl::ConnectToApplication(
+    mojo::URLRequestPtr request,
+    const base::Closure& error_cb) {
   MOJO_CHECK(shell_);
   ServiceProviderPtr local_services;
   InterfaceRequest<ServiceProvider> local_request = GetProxy(&local_services);
@@ -66,6 +72,7 @@ ApplicationConnection* ApplicationImpl::ConnectToApplication(
   std::string application_url = request->url.To<std::string>();
   shell_->ConnectToApplication(request.Pass(), GetProxy(&remote_services),
                                local_services.Pass());
+  remote_services.set_connection_error_handler(error_cb);
   internal::ServiceRegistry* registry = new internal::ServiceRegistry(
       this, application_url, application_url, remote_services.Pass(),
       local_request.Pass());