Show an extension info bubble when a script badge is clicked.

chrome/browser/resources/extensions/extension_info.js

Index: chrome/browser/resources/extensions/extension_info.js
diff --git a/chrome/browser/resources/extensions/extension_info.js b/chrome/browser/resources/extensions/extension_info.js
new file mode 100644
index 0000000000000000000000000000000000000000..52a2930530a23e0bfc3a3044b1b5c7d2be800384
--- /dev/null
+++ b/chrome/browser/resources/extensions/extension_info.js
@@ -0,0 +1,33 @@
+// 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.
+
+cr.define('extension_info', function() {
+  'use strict';
+
+  /**
+   * Object for accessing localized strings.
+   * @type {!LocalStrings}
+   */
+  function load() {
+    // i18nTemplate.process(document, templateData);

[Aaron Boodman, 2012/06/16 02:21:19]

Shouldn't this be enabled?

[Yoyo Zhou, 2012/06/18 19:39:38]

The WebUI tutorial was kind of confusing, especially in the parts where it
appeared to have been superseded by current practice. In this case, I ended up
using i18n_template2, which does the equivalent this when it's included, and
forgot to remove this line.

+    var extensionId = location.pathname.substr(1);
+    if (extensionId)
+      chrome.send('requestExtensionInfo', [extensionId]);
+  }
+
+  function handleExtensionInfo(extension) {
+    $('extension-item').style.backgroundImage = 'url(' + extension.icon + ')';
+    $('extension-title-running').textContent =
+        loadTimeData.getStringF('isRunning', extension.name);
+    $('extension-update-time').textContent = extension.install_time;
+    $('extension-description').textContent = extension.description;
+  }
+
+  return {
+    load: load,
+    handleExtensionInfo: handleExtensionInfo
+  };
+});
+
+window.addEventListener('DOMContentLoaded', extension_info.load);