Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components/polymer/src/standard/resolveUrl.html

Index: third_party/polymer/v0_8/components/polymer/src/standard/resolveUrl.html
diff --git a/third_party/polymer/v0_8/components/polymer/src/standard/resolveUrl.html b/third_party/polymer/v0_8/components/polymer/src/standard/resolveUrl.html
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index 0000000000000000000000000000000000000000..5e0caf5f2f45f6284fa794d21b547ff7bc25be20
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@@ -0,0 +1,27 @@
+<!--
+@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>
+
+  Polymer.Base._addFeature({
+
+    resolveUrl: function(url) {
+      // TODO(sorvell): do we want to put the module reference on the prototype?
+      var module = Polymer.DomModule.import(this.is);
+      var root = '';
+      if (module) {
+        var assetPath = module.getAttribute('assetpath') || '';
+        root = Polymer.ResolveUrl.resolveUrl(assetPath, module.ownerDocument.baseURI);
+      }
+      return Polymer.ResolveUrl.resolveUrl(url, root);
+    }
+
+  });
+
+</script>