Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components/polymer/src/lib/case-map.html

Index: third_party/polymer/v0_8/components/polymer/src/lib/case-map.html
diff --git a/third_party/polymer/v0_8/components/polymer/src/lib/case-map.html b/third_party/polymer/v0_8/components/polymer/src/lib/case-map.html
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index 0000000000000000000000000000000000000000..396edbeae53f9cf2db00b39b74f625195570d686
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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
+-->
+<script>
+
+  Polymer.CaseMap = {
+
+    _caseMap: {},
+
+    dashToCamelCase: function(dash) {
+      var mapped = Polymer.CaseMap._caseMap[dash];
+      if (mapped) {
+        return mapped;
+      }
+      // TODO(sjmiles): is rejection test actually helping perf?
+      if (dash.indexOf('-') < 0) {
+        return Polymer.CaseMap._caseMap[dash] = dash;
+      }
+      return Polymer.CaseMap._caseMap[dash] = dash.replace(/-([a-z])/g, 
+        function(m) {
+          return m[1].toUpperCase(); 
+        }
+      );
+    },
+
+    camelToDashCase: function(camel) {
+      var mapped = Polymer.CaseMap._caseMap[camel];
+      if (mapped) {
+        return mapped;
+      }
+      return Polymer.CaseMap._caseMap[camel] = camel.replace(/([a-z][A-Z])/g, 
+        function (g) { 
+          return g[0] + '-' + g[1].toLowerCase() 
+        }
+      );
+    }
+
+  };
+
+</script>