config_service: Add authentication to the UI.

appengine/config_service/ui/common/third_party/google-signin/google-signin-aware.html

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 Copyright 2014 Google Inc
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
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     https://www.apache.org/licenses/LICENSE-2.0
 
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 distributed under the License is distributed on an "AS IS" BASIS,
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 See the License for the specific language governing permissions and
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-<link rel="import" href="../polymer/polymer.html">
-<link rel="import" href="../google-apis/google-js-api.html">
+<link rel="import" href="../../../bower_components/polymer/polymer.html">
+<link rel="import" href="../../../bower_components/google-apis/google-js-api.html">
 
 <script>
   (function() {
 
     /**
      * Enum of attributes to be passed through to the login API call.
      * @readonly
      * @enum {string}
      */
     var ProxyLoginAttributes = {
@@ skipping 194 matching lines @@
       /** True if have google+ scopes */
       _hasPlusScopes: false,
 
       /**
        * array of <google-signin-aware>
        * state changes are broadcast to them
        */
       signinAwares: [],
 
       init: function() {
-        this._apiLoader = document.createElement('google-js-api');
-        this._apiLoader.addEventListener('js-api-load', this.loadAuth2.bind(this));
-        if (Polymer.Element) {
-          document.body.appendChild(this._apiLoader);
-        }
+        var that = this;
+        document.addEventListener('DOMContentLoaded', function() {
+          that._apiLoader = document.createElement('google-js-api');
+          that._apiLoader.addEventListener('js-api-load', that.loadAuth2.bind(that));
+          if (Polymer.Element) {
+            document.body.appendChild(that._apiLoader);
+          }
+        })
       },
 
       loadAuth2: function() {
-        gapi.load('auth2', this.initAuth2.bind(this));
+        var that = this;
+        gapi.load('auth2', that.initAuth2.bind(that));
       },
 
       initAuth2: function() {
         if (!('gapi' in window) || !('auth2' in window.gapi) || !this.clientId) {
           return;
         }
         var auth = gapi.auth2.init({
           'client_id': this.clientId,
           'cookie_policy': this.cookiePolicy,
           'scope': this.requestedScopes,
@@ skipping 563 matching lines @@
       },
 
       _updateOfflineCode: function(code) {
         if (code) {
           this.fire('google-signin-offline-success', {code: code});
         }
       }
     });
   })();
 </script>