Youtube IFrame API Untrusted Origin

I'm using the IFrame API as the title suggests. I have been following the guide in the API Reference. It works for me however I have found a few warnings that occur and would like

Solution 1:

The error has been acknowledged by Google:

https://code.google.com/p/google-cast-sdk/issues/detail?id=309

This is per design; in order to know if a user has the Chromecast extension installed (and which one), cast_sender.js requests the script from all potentially installed extensions.

This question has also been answered here: https://stackoverflow.com/a/26095117/1007392

Best, Sam