Android Java Libraries in UE4 Game (OUYA SDK, Google Play Game Services, etc.)

Is there anything special needed to get a UE4 Plugin to load in Android?

I’ve added logging in the UE4 Plugin StartupModule().

The UE4 editor log shows the message:
LogOuyaSDKPlugin: *** OuyaSDKPlugin has loaded. ***

But when the game loads on Android I’m not seeing the entries appear in the logcat.