Added vulcanize under third_party/npm_modules

node_modules/vulcanize/test/html/imports/simple-style.css

Index: node_modules/vulcanize/test/html/imports/simple-style.css
diff --git a/bower_components/core-dropdown/core-dropdown.css b/node_modules/vulcanize/test/html/imports/simple-style.css
similarity index 66%
copy from bower_components/core-dropdown/core-dropdown.css
copy to node_modules/vulcanize/test/html/imports/simple-style.css
index 5b03d4a05997781273577ff216178efb204987c6..bdd3d6c7f1a224520f44240ead64bd34294a44a7 100644
--- a/bower_components/core-dropdown/core-dropdown.css
+++ b/node_modules/vulcanize/test/html/imports/simple-style.css
@@ -1,4 +1,5 @@
 /*
+@license
 Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
@@ -6,9 +7,8 @@ The complete set of contributors may be found at http://polymer.github.io/CONTRI
 Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 */
-
-:host {
-  position: absolute;
-  overflow: auto;
-  background-color: #fff;
-}
+:host([type="platform"]) { background-color: red; }
+:host([type="core"]) { background-color: red; }
+:host([type="elements"]) { background-color: red; }
+polyfill-next-selector { content: ':host header'; }
+polyfill-next-selector { content: 'I WIN'; }