ImageBitmapLoader: Honor crossOrigin property.

src/loaders/ImageBitmapLoader.js

@@ -63,7 +63,10 @@ ImageBitmapLoader.prototype = Object.assign( Object.create( Loader.prototype ),
 
 		}
 
-		fetch( url ).then( function ( res ) {
+		const fetchOptions = {};
+		fetchOptions.credentials = ( this.crossOrigin === 'anonymous' ) ? 'same-origin' : 'include';
+
+		fetch( url, fetchOptions ).then( function ( res ) {
 
 			return res.blob();