MD Bookmarks: Integrate new data store with UI elements

chrome/browser/resources/md_bookmarks/sidebar.js

Index: chrome/browser/resources/md_bookmarks/sidebar.js
diff --git a/chrome/browser/resources/md_bookmarks/sidebar.js b/chrome/browser/resources/md_bookmarks/sidebar.js
index 9cfeb1b3803120757c044dce413e149b2b38dd4f..d704a9a181475de6ebddf835657e8e8836b059cd 100644
--- a/chrome/browser/resources/md_bookmarks/sidebar.js
+++ b/chrome/browser/resources/md_bookmarks/sidebar.js
@@ -5,7 +5,19 @@
 Polymer({
   is: 'bookmarks-sidebar',
 
+  behaviors: [
+    bookmarks.StoreClient,
+  ],
+
   properties: {
+    /** @type {Array<string>} */
     rootFolders: Array,
   },
+
+  attached: function() {
+    this.watch('rootFolders', function(store) {
+      return store.nodes['0'].children;
+    });
+    this.updateFromStore();
+  },
 });