Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components/polymer/src/lib/module.html

+<!--
+@license
+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
+-->
+<script>
+(function(scope) {
+
+  function withDependencies(task, depends) {
+    depends = depends || [];
+    if (!depends.map) {
+      depends = [depends];
+    }
+    return task.apply(this, depends.map(marshal));
+  }
+
+  function module(name, dependsOrFactory, moduleFactory) {
+    var module = null;
+    switch (arguments.length) {
+      case 0:
+        return;
+      case 2:
+        // dependsOrFactory is `factory` in this case
+        module = dependsOrFactory.apply(this);
+        break;
+      default:
+        // dependsOrFactory is `depends` in this case
+        module = withDependencies(moduleFactory, dependsOrFactory);
+        break;
+    }
+    modules[name] = module;
+  };
+
+  function marshal(name) {
+    return modules[name];
+  }
+
+  var modules = {};
+
+  var using = function(depends, task) {
+    withDependencies(task, depends);
+  };
+
+  // exports
+
+  scope.marshal = marshal;
+  // `module` confuses commonjs detectors
+  scope.modulate = module;
+  scope.using = using;
+
+})(this);
+</script>