Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components-chromium/polymer/src/lib/annotations/demo/app-chrome-extracted.js

Index: third_party/polymer/v0_8/components-chromium/polymer/src/lib/annotations/demo/app-chrome-extracted.js
diff --git a/third_party/polymer/v0_8/components-chromium/polymer/src/lib/annotations/demo/app-chrome-extracted.js b/third_party/polymer/v0_8/components-chromium/polymer/src/lib/annotations/demo/app-chrome-extracted.js
new file mode 100644
index 0000000000000000000000000000000000000000..c40593407ac6904397d1274d0c09e367ef90d74c
--- /dev/null
+++ b/third_party/polymer/v0_8/components-chromium/polymer/src/lib/annotations/demo/app-chrome-extracted.js
@@ -0,0 +1,21 @@
+console.perf();
+;
+
+    using('Annotations', function(Annotations) {
+
+      var template = document.querySelector('template');
+      var list = Annotations.parseAnnotations(template);
+      console.log(list);
+
+      var out = document.querySelector('pre');
+      out.textContent = JSON.stringify(list, function(key, value) {
+        if (key === 'parent') {
+          return '<parent reference>';
+        }
+        return value;
+      }, '  ');
+
+    });
+
+  
+;console.perfEnd();