media: Quit MojoMediaApplication when no service is bound.

mojo/application/public/cpp/application_impl.h

Index: mojo/application/public/cpp/application_impl.h
diff --git a/mojo/application/public/cpp/application_impl.h b/mojo/application/public/cpp/application_impl.h
index 20b073359191a81e8cc5e047ab4c094ba832f5ff..c5c01d3380210e93a0ff710dc8c62e5c0939457d 100644
--- a/mojo/application/public/cpp/application_impl.h
+++ b/mojo/application/public/cpp/application_impl.h
@@ -81,8 +81,12 @@ class ApplicationImpl : public Application,
   // or nullptr otherwise. Caller does not take ownership. The pointer remains
   // valid until an error occurs on the connection with the Shell, until the
   // ApplicationImpl is destroyed, or until the connection is closed through a
-  // call to ApplicationConnection::CloseConnection.
+  // call to ApplicationConnection::CloseConnection. If |terminate_cb| is
+  // provided, it will be fired when the application is terminated.
   ApplicationConnection* ConnectToApplication(mojo::URLRequestPtr request);
+  ApplicationConnection* ConnectToApplication(
+      mojo::URLRequestPtr request,
+      const base::Closure& terminate_cb);
 
   // Closes the |connection|.
   void CloseConnection(ApplicationConnection* connection);