"Enable Internal Profiler" not working

I'm creating a GearVR app on Android and have the "Enable Internal Profile" option selected for my development build (it also has Autoconnect Profiler selected). However I don't see any of the related output in my logcat. Anyone have any idea why that might be the case? (Note: I'm following the info in this article: https://developer.oculus.com/blog/squeezing-performance-out-of-your-unity-gear-vr-game-continued)

Thanks!