Delete the old extension-based script bubble.

chrome/browser/resources/script_bubble/popup.js

-// Copyright (c) 2012 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.
-
-init();
-
-function init() {
-  var extensionIds = location.hash.substring(1).split(',');
-  populateHeading(extensionIds.length);
-
-  var template = document.querySelector('.row');
-  extensionIds.forEach(populateRow.bind(null, template));
-}
-
-function populateHeading(numExtensions) {
-  // TODO(aa): Internationalize. Copy whatever bookmark manager is doing.
-  var singular = ' extension is interacting with this page';
-  var plural = ' extensions are interacting with this page';
-  var phrase = numExtensions == 1 ? singular : plural;
-  document.querySelector('h1').textContent = numExtensions + phrase;
-}
-
-function populateRow(template, extensionId) {
-  chrome.management.get(extensionId, function(info) {
-    var row = template.cloneNode(true);
-    row.querySelector('.icon').src =
-        'chrome://extension-icon/' + extensionId + '/16/1';
-    row.querySelector('.name').textContent = info.name;
-    row.classList.remove('template');
-    template.parentNode.appendChild(row);
-  });
-}