Add upstream

wp-content/plugins/jetpack/_inc/gallery-settings.js

@@ -0,0 +1,36 @@
+/**
+ * Jetpack Gallery Settings
+ */
+( function( $ ) {
+	var media = wp.media;
+
+	// Wrap the render() function to append controls.
+	media.view.Settings.Gallery = media.view.Settings.Gallery.extend( {
+		render: function() {
+			var $el = this.$el;
+
+			media.view.Settings.prototype.render.apply( this, arguments );
+
+			// Append the type template and update the settings.
+			$el.append( media.template( 'jetpack-gallery-settings' ) );
+			media.gallery.defaults.type = 'default'; // lil hack that lets media know there's a type attribute.
+			this.update.apply( this, [ 'type' ] );
+
+			// Hide the Columns setting for all types except Default
+			$el
+				.find( 'select[name=type]' )
+				.on( 'change', function() {
+					var columnSetting = $el.find( 'select[name=columns]' ).closest( 'label.setting' );
+
+					if ( 'default' === $( this ).val() || 'thumbnails' === $( this ).val() ) {
+						columnSetting.show();
+					} else {
+						columnSetting.hide();
+					}
+				} )
+				.change();
+
+			return this;
+		},
+	} );
+} )( jQuery );