Added base template for config ui.

appengine/config_service/ui/bower_components/webcomponentsjs/entrypoints/webcomponents-sd-ce-index.js

+/**
+@license
+Copyright (c) 2017 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
+*/
+'use strict';
+
+/*
+ * Polyfills loaded: Custom Elements, Shady DOM/Shady CSS
+ * Used in: Safari 9, Firefox, Edge
+ */
+
+import '../bower_components/shadydom/src/shadydom.js'
+import '../bower_components/custom-elements/src/custom-elements.js'
+import '../bower_components/shadycss/entrypoints/scoping-shim.js'
+
+// NOTE: this is a load-bearing IIFE for Closure
+(function() {
+  let document = window.document;
+  // global for (1) existence means `WebComponentsReady` will file,
+  // (2) WebComponents.ready == true means event has fired.
+  window.WebComponents = window.WebComponents || {};
+
+  function fire() {
+    requestAnimationFrame(() => {
+      window.WebComponents.ready = true;
+      window.document.dispatchEvent(new CustomEvent('WebComponentsReady', { bubbles: true }));
+    })
+  }
+
+  function wait() {
+    fire();
+    document.removeEventListener('readystatechange', wait);
+  }
+
+  if (document.readyState !== 'loading') {
+    fire();
+  } else {
+    document.addEventListener('readystatechange', wait);
+  }
+})();