Add options and a browser-action popup.

go-back-with-backspace/pages/installed.js

+// Copyright 2016 Google Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Initialize the page.
+function init() {
+  LoadInternationalizedStrings();
+
+  document.getElementById('report_page').onclick = function() {
+    reportPage();
+  };
+
+  document.getElementById('open_options').onclick = function() {
+    chrome.runtime.openOptionsPage();
+  };
+
+}
+
+window.addEventListener('load', init, false);