Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components/polymer/src/lib/style-defaults.html

Index: third_party/polymer/v0_8/components/polymer/src/lib/style-defaults.html
diff --git a/third_party/polymer/v0_8/components/polymer/src/lib/style-defaults.html b/third_party/polymer/v0_8/components/polymer/src/lib/style-defaults.html
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+<!--
+@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
+-->
+<link rel="import" href="style-util.html">
+<script>
+
+  (function() {
+    
+    var defaultSheet = document.createElement('style'); 
+
+    function applyCss(cssText) {
+      defaultSheet.textContent += cssText;
+      defaultSheet.__cssRules =
+        Polymer.StyleUtil.parser.parse(defaultSheet.textContent);
+    }
+
+    applyCss('');
+
+    // exports
+    Polymer.StyleDefaults = {
+      applyCss: applyCss,
+      defaultSheet: defaultSheet
+    };
+
+  })();
+</script>