function gotVRDisplays( displays ) {

		vrDisplays = displays;

		if ( displays.length > 0 ) {

			vrDisplay = displays[ 0 ];

		} else {

			if ( onError ) onError( 'HMD not available' );

		}

	}
@author dmarcos / https://github.com/dmarcos
@author mrdoob / http://mrdoob.com

WebVR Spec: http://mozvr.github.io/webvr-spec/webvr.html

Firefox: http://mozvr.com/downloads/
Chromium: https://webvr.info/get-chrome