DevTools: [SASS] introduce Gonzales-PE for SCSS parsing

third_party/WebKit/Source/devtools/front_end/externs.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
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  * @extends {ESTree.Node}
  * @constructor
  */
 ESTree.TemplateLiteralNode = function()
 {
     /** @type {!Array.<!ESTree.Node>} */
     this.quasis;
     /** @type {!Array.<!ESTree.Node>} */
     this.expressions;
 }
+
+var Gonzales = {}
+var gonzales = {
+    /**
+     * @param {string} text
+     * @param {!Object=} options
+     * @return {!Gonzales.Node}
+     */
+    parse: function(text, options) { },
+}
+
+/**
+ * @constructor
+ */
+Gonzales.Location = function()
+{
+    /** @type {number} */
+    this.line;
+    /** @type {number} */
+    this.column;
+}
+
+/**
+ * @constructor
+ */
+Gonzales.Node = function()
+{
+    /** @type {string} */
+    this.type;
+    /** @type {string} */
+    this.syntax;
+    /** @type {!Gonzales.Location} */
+    this.start;
+    /** @type {!Gonzales.Location} */
+    this.end;
+    /** @type {(string|!Array<!Gonzales.Node>)} */
+    this.content;
+}