Added vulcanize under third_party/npm_modules

node_modules/vulcanize/node_modules/whacko/node_modules/parse5/lib/jsdom/parsing_unit.js

Index: node_modules/vulcanize/node_modules/whacko/node_modules/parse5/lib/jsdom/parsing_unit.js
diff --git a/node_modules/vulcanize/node_modules/whacko/node_modules/parse5/lib/jsdom/parsing_unit.js b/node_modules/vulcanize/node_modules/whacko/node_modules/parse5/lib/jsdom/parsing_unit.js
new file mode 100644
index 0000000000000000000000000000000000000000..852efa888244892781c2d96aed1982e3c58c9e84
--- /dev/null
+++ b/node_modules/vulcanize/node_modules/whacko/node_modules/parse5/lib/jsdom/parsing_unit.js
@@ -0,0 +1,53 @@
+'use strict';
+
+var ParsingUnit = module.exports = function (parser) {
+    this.parser = parser;
+    this.suspended = false;
+    this.parsingLoopLock = false;
+    this.callback = null;
+};
+
+ParsingUnit.prototype._stateGuard = function (suspend) {
+    if (this.suspended && suspend)
+        throw new Error('parse5: Parser was already suspended. Please, check your control flow logic.');
+
+    else if (!this.suspended && !suspend)
+        throw new Error('parse5: Parser was already resumed. Please, check your control flow logic.');
+
+    return suspend;
+};
+
+ParsingUnit.prototype.suspend = function () {
+    this.suspended = this._stateGuard(true);
+
+    return this;
+};
+
+ParsingUnit.prototype.resume = function () {
+    this.suspended = this._stateGuard(false);
+
+    //NOTE: don't enter parsing loop if it is locked. Without this lock _runParsingLoop() may be called
+    //while parsing loop is still running. E.g. when suspend() and resume() called synchronously.
+    if (!this.parsingLoopLock)
+        this.parser._runParsingLoop();
+
+    return this;
+};
+
+ParsingUnit.prototype.documentWrite = function (html) {
+    this.parser.tokenizer.preprocessor.write(html);
+
+    return this;
+};
+
+ParsingUnit.prototype.handleScripts = function (scriptHandler) {
+    this.parser.scriptHandler = scriptHandler;
+
+    return this;
+};
+
+ParsingUnit.prototype.done = function (callback) {
+    this.callback = callback;
+
+    return this;
+};