Inline scripts were extracted from Polymer elements.

third_party/polymer/components-chromium/core-menu/core-menu.css

+/*
+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
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+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
+*/
+
+html /deep/ core-menu {
+  display: block;
+  margin: 12px;
+}
+
+polyfill-next-selector { content: 'core-menu > core-item'; }
+html /deep/ core-menu::shadow ::content > core-item {
+  cursor: default;
+}