Added vulcanize under third_party/npm_modules

node_modules/vulcanize/test/html/imports/simple-import.html

Index: node_modules/vulcanize/test/html/imports/simple-import.html
diff --git a/bower_components/core-icon-button/metadata.html b/node_modules/vulcanize/test/html/imports/simple-import.html
similarity index 61%
copy from bower_components/core-icon-button/metadata.html
copy to node_modules/vulcanize/test/html/imports/simple-import.html
index 35c87dccb9f91537afaf63d40d08413f0a58192d..7f6a8cfc250cd2a97290d2ab7c5dfe29fd07d7d3 100644
--- a/bower_components/core-icon-button/metadata.html
+++ b/node_modules/vulcanize/test/html/imports/simple-import.html
@@ -7,14 +7,16 @@
     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
 -->
-<x-meta id="core-icon-button" label="Icon Button" group="Core">
-
+<polymer-element name="my-element" noscript>
   <template>
-    <core-icon-button icon="menu" theme="core-light-theme"></core-icon-button>
+  <link rel="stylesheet" href="simple-style.css" shim-shadowdom>
+  <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 630 630">
+    <rect x="0" y="0" width="630" height="630" fill="#3c790a"/>
+    <path d="m212 497c11"/>
+    <polygon />
+    <path />
+    <polygon/>
+    <path />
+  </svg>
   </template>
-
-  <template id="imports">
-    <link rel="import" href="core-icon-button.html">
-  </template>
-
-</x-meta>
+</polymer-element>