Project import generated by Copybara.

GitOrigin-RevId: 63746295f1a5ab5a619056791995793d65529e62
diff --git a/node_modules/mdl-ext/src/demo/etc/mdl-iframe-loader.js b/node_modules/mdl-ext/src/demo/etc/mdl-iframe-loader.js
new file mode 100644
index 0000000..abade92
--- /dev/null
+++ b/node_modules/mdl-ext/src/demo/etc/mdl-iframe-loader.js
@@ -0,0 +1,100 @@
+'use strict';
+
+/**
+ * Inject required CSS and JS into html fragment loaded into an <iframe>
+ * @type {{}}
+ */
+var mdlIframeLoader = {};
+(function(self) {
+
+  // The CSS and JS needed to run MDL snippets in an <iframe>
+
+  // https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent
+  try {
+    new window.CustomEvent('test');
+  } catch(e) {
+    var CustomEvent = function(event, params) {
+      var evt;
+      params = params || {
+        bubbles: false,
+        cancelable: false,
+        detail: undefined
+      };
+
+      evt = document.createEvent('CustomEvent');
+      evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail);
+      return evt;
+    };
+
+    CustomEvent.prototype = window.Event.prototype;
+    window.CustomEvent = CustomEvent; // expose definition to window
+  }
+
+  var docs = [
+    { 'type': 'css', 'id': 'font-roboto-css',     'src': 'https://fonts.googleapis.com/css?family=Roboto:regular,bold,italic,thin,light,bolditalic,black,medium&amp;lang=en' },
+    { 'type': 'css', 'id': 'material-icon-css',   'src': 'https://fonts.googleapis.com/icon?family=Material+Icons' },
+    { 'type': 'css', 'id': 'dialog-polyfill-css', 'src': 'demo/styles/dialog-polyfill.css' },
+    { 'type': 'css', 'id': 'material-css',        'src': 'https://code.getmdl.io/1.1.3/material.grey-orange.min.css' },
+    { 'type': 'css', 'id': 'mdlext-css',          'src': 'lib/mdl-ext-eqjs.css' },
+    { 'type': 'css', 'id': 'demo-css',            'src': 'demo/styles/demo.css' },
+    { 'type': 'js',  'id': 'dialog-polyfill-js',  'src': 'demo/scripts/dialog-polyfill.js' },
+    { 'type': 'js',  'id': 'material-js',         'src': 'https://code.getmdl.io/1.1.3/material.min.js' },
+    { 'type': 'js',  'id': 'eq-js',               'src': 'demo/scripts/eq.min.js' },
+    { 'type': 'js',  'id': 'mdlext-js',           'src': 'lib/index.js' }
+  ];
+
+  var joinOrigin = function(origin, src) {
+    return src.startsWith('http') ? src : origin.concat(src);
+  };
+
+  var loadResources = function( origin, loadCompleted ) {
+    var expectToLoad = docs.length;
+    var filesLoaded = 0;
+
+    for (var i = 0; i < docs.length; i++) {
+      if (document.getElementById(docs[i].id) === null) {
+        var el;
+        var src = joinOrigin(origin, docs[i].src);
+
+        if (docs[i].type === 'css') {
+          el = document.createElement('link');
+          el.href = src;
+          el.rel = 'stylesheet';
+          el.type = 'text/css';
+        }
+        else {
+          el = document.createElement('script');
+          el.src = src;
+          el.type = 'text/javascript';
+          el.async = false;
+          el.charset = 'utf-8';
+        }
+        el.id = docs[i].id;
+        el.onload = function () {
+          filesLoaded++;
+          if(filesLoaded >= expectToLoad) {
+            loadCompleted();
+          }
+        };
+        document.head.appendChild(el);
+      }
+      else {
+        expectToLoad--;
+      }
+    }
+  };
+
+  /**
+   * Inject required CSS and JS into html fragment loaded into an <iframe>
+   * @param origin path relative to root of this project, e.g. "../../../
+   */
+  self.load = function( origin ) {
+    loadResources( origin, function () {
+      if(window.componentHandler) {
+        window.componentHandler.upgradeDom();
+      }
+    });
+  };
+
+  return self;
+})(mdlIframeLoader);