MD History: Display synced tabs history.

chrome/browser/resources/md_history/side_bar.js

Index: chrome/browser/resources/md_history/side_bar.js
diff --git a/chrome/browser/resources/md_history/side_bar.js b/chrome/browser/resources/md_history/side_bar.js
new file mode 100644
index 0000000000000000000000000000000000000000..3446038f9251ff155e8110eaae77e48465dd722e
--- /dev/null
+++ b/chrome/browser/resources/md_history/side_bar.js
@@ -0,0 +1,16 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+Polymer({
+  is: 'history-side-bar',
+
+  /**
+   * Handles menu selection changes.
+   * @param {Event} e
+   * @private
+   */
+  onSelect_: function(e) {
+    this.fire('switch-display', {display: e.detail.item.id});
+  },
+});