Replace navigator.xr.supportsSession with navigator.xr.isSessionSupported to...

Replace navigator.xr.supportsSession with navigator.xr.isSessionSupported to follow the latest WebXR API spec

examples/js/vr/WebVR.js

@@ -169,14 +169,20 @@ THREE.WEBVR = {
 
 		}
 
-		if ( 'xr' in navigator && 'supportsSession' in navigator.xr ) {
+		if ( 'xr' in navigator && 'isSessionSupported' in navigator.xr ) {
 
 			var button = document.createElement( 'button' );
 			button.style.display = 'none';
 
 			stylizeElement( button );
 
-			navigator.xr.supportsSession( 'immersive-vr' ).then( showEnterXR ).catch( showXRNotFound );
+			navigator.xr.isSessionSupported( 'immersive-vr' ).then( funciton ( supported ) {
+				if ( supported ) {
+					showEnterXR();
+				} else {
+					showXRNotFound();
+				}
+			} );
 
 			return button;
 

src/renderers/WebGLRenderer.js

@@ -309,7 +309,7 @@ function WebGLRenderer( parameters ) {
 
 	// vr
 
-	var vr = ( typeof navigator !== 'undefined' && 'xr' in navigator && 'supportsSession' in navigator.xr ) ? new WebXRManager( _this, _gl ) : new WebVRManager( _this );
+	var vr = ( typeof navigator !== 'undefined' && 'xr' in navigator && 'isSessionSupported' in navigator.xr ) ? new WebXRManager( _this, _gl ) : new WebVRManager( _this );
 
 	this.vr = vr;