Customize: move WP_Customize_Control subclasses to wp-includes/customize, they load in the exact same place.

See #34432.


git-svn-id: https://develop.svn.wordpress.org/trunk@35389 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/customize/class-wp-customize-new-menu-control.php

@@ -0,0 +1,40 @@
+<?php
+/**
+ * Customize API: WP_Customize_New_Menu_Control class
+ *
+ * @package WordPress
+ * @subpackage Customize
+ * @since 4.4.0
+ */
+
+/**
+ * Customize control class for new menus.
+ *
+ * @since 4.3.0
+ *
+ * @see WP_Customize_Control
+ */
+class WP_Customize_New_Menu_Control extends WP_Customize_Control {
+
+	/**
+	 * Control type.
+	 *
+	 * @since 4.3.0
+	 * @access public
+	 * @var string
+	 */
+	public $type = 'new_menu';
+
+	/**
+	 * Render the control's content.
+	 *
+	 * @since 4.3.0
+	 * @access public
+	 */
+	public function render_content() {
+		?>
+		<button type="button" class="button button-primary" id="create-new-menu-submit"><?php _e( 'Create Menu' ); ?></button>
+		<span class="spinner"></span>
+		<?php
+	}
+}