MDL-44357 theme: Allow core to compile LESS in PHP

lib/lessphp/Tree/Javascript.php

@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * Javascript
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Javascript extends Less_Tree{
+
+	public $type = 'Javascript';
+	public $escaped;
+	public $expression;
+	public $index;
+
+	/**
+	 * @param boolean $index
+	 * @param boolean $escaped
+	 */
+	public function __construct($string, $index, $escaped){
+		$this->escaped = $escaped;
+		$this->expression = $string;
+		$this->index = $index;
+	}
+
+	public function compile(){
+		return new Less_Tree_Anonymous('/* Sorry, can not do JavaScript evaluation in PHP... :( */');
+	}
+
+}