Index: src/wp-includes/js/customize-base.js
===================================================================
--- src/wp-includes/js/customize-base.js	(revision 26164)
+++ src/wp-includes/js/customize-base.js	(working copy)
@@ -129,14 +129,14 @@
 			return this;
 		},
 
-		bind: function( id, callback ) {
+		bind: function( id ) {
 			this.topics = this.topics || {};
 			this.topics[ id ] = this.topics[ id ] || $.Callbacks();
 			this.topics[ id ].add.apply( this.topics[ id ], slice.call( arguments, 1 ) );
 			return this;
 		},
 
-		unbind: function( id, callback ) {
+		unbind: function( id ) {
 			if ( this.topics && this.topics[ id ] )
 				this.topics[ id ].remove.apply( this.topics[ id ], slice.call( arguments, 1 ) );
 			return this;
@@ -209,12 +209,12 @@
 			return value;
 		},
 
-		bind: function( callback ) {
+		bind: function( ) {
 			this.callbacks.add.apply( this.callbacks, arguments );
 			return this;
 		},
 
-		unbind: function( callback ) {
+		unbind: function( ) {
 			this.callbacks.remove.apply( this.callbacks, arguments );
 			return this;
 		},