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 7036d33dbc6b72beff66800258d101ca20a093db..c76488f6aad9e089c7d6c7b30282fb86b0435194 100644
--- a/mojo/application/public/cpp/application_impl.h
+++ b/mojo/application/public/cpp/application_impl.h
@@ -80,8 +80,11 @@ class ApplicationImpl : public Application,
   // connection if the connection is permitted by this application's delegate,
   // or nullptr otherwise. Caller does not take ownership. The pointer remains
   // valid until an error occurs on the connection with the Shell, or until the
-  // ApplicationImpl is destroyed, whichever occurs first.
+  // ApplicationImpl is destroyed, whichever occurs first. If |error_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& error_cb);

[sandersd (OOO until July 31), 2015/06/30 21:32:47]

It's true that this is caused by a connection error, but it doesn't seem to be
an error state. |terminate_cb| instead?

[xhwang, 2015/07/07 20:29:24]

Done.

 
   // Connect to application identified by |request->url| and connect to the
   // service implementation of the interface identified by |Interface|.