Index: src/wp-includes/class-wp-customize-widgets.php
===================================================================
--- src/wp-includes/class-wp-customize-widgets.php	(revision 27871)
+++ src/wp-includes/class-wp-customize-widgets.php	(working copy)
@@ -78,7 +78,10 @@
 		add_action( 'after_setup_theme',                       array( $this, 'setup_widget_addition_previews' ) );
 		add_action( 'customize_controls_init',                 array( $this, 'customize_controls_init' ) );
 		add_action( 'customize_register',                      array( $this, 'schedule_customize_register' ), 1 );
-		add_action( 'customize_controls_enqueue_scripts',      array( $this, 'customize_controls_enqueue_deps' ) );
+		add_action( 'customize_controls_enqueue_scripts',      array( $this, 'enqueue_scripts' ) );
+		add_action( 'customize_controls_print_styles',         array( $this, 'print_styles' ) );
+		add_action( 'customize_controls_print_scripts',        array( $this, 'print_scripts' ) );
+		add_action( 'customize_controls_print_footer_scripts', array( $this, 'print_footer_scripts' ) );
 		add_action( 'customize_controls_print_footer_scripts', array( $this, 'output_widget_control_templates' ) );
 		add_action( 'customize_preview_init',                  array( $this, 'customize_preview_init' ) );
 
@@ -517,12 +520,43 @@
 	}
 
 	/**
+	 * Call admin_print_styles-widgets.php and admin_print_styles hooks.
+	 *
+	 * @since 3.9.0
+	 * @access public
+	 */
+	public function print_styles() {
+		/** This action is documented in wp-admin/admin-header.php */
+		do_action( 'admin_print_styles-widgets.php' );
+
+		/** This action is documented in wp-admin/admin-header.php */
+		do_action( 'admin_print_styles' );
+	}
+
+	/**
+	 * Call admin_print_scripts-widgets.php and admin_print_scripts hooks.
+	 *
+	 * @since 3.9.0
+	 * @access public
+	 */
+	public function print_scripts() {
+		/** This action is documented in wp-admin/admin-header.php */
+		do_action( 'admin_print_scripts-widgets.php' );
+
+		/** This action is documented in wp-admin/admin-header.php */
+		do_action( 'admin_print_scripts' );
+	}
+
+	/**
 	 * Enqueue scripts and styles for customizer panel and export data to JS.
 	 *
 	 * @since 3.9.0
 	 * @access public
 	 */
-	public function customize_controls_enqueue_deps() {
+	public function enqueue_scripts() {
+		/** This action is documented in wp-admin/admin-header.php */
+		do_action( 'admin_enqueue_scripts', 'widgets.php' );
+
 		wp_enqueue_style( 'customize-widgets' );
 		wp_enqueue_script( 'customize-widgets' );
 
@@ -594,6 +628,20 @@
 	}
 
 	/**
+	 * Call admin_print_footer_scripts and admin_print_scripts hooks.
+	 *
+	 * @since 3.9.0
+	 * @access public
+	 */
+	public function print_footer_scripts() {
+		/** This action is documented in wp-admin/admin-footer.php */
+		do_action( 'admin_print_footer_scripts' );
+
+		/** This action is documented in wp-admin/admin-footer.php */
+		do_action( 'admin_footer-widgets.php' );
+	}
+
+	/**
 	 * Render the widget form control templates into the DOM so that plugin scripts can manipulate them
 	 *
 	 * @since 3.9.0