Vulcan2

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Vulcan2",
  "version": "1.0",
  "description": "Convert emoticons in Google Hangouts to their text equivalent.",
  "icons": {
    "16": "images/16.png",
    "48": "images/48.png",
    "128": "images/128.png"
  },
  "permissions": [
    "tabs",
    "*://talkgadget.google.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://talkgadget.google.com/*"
      ],
      "all_frames": true,
      "js": [
        "javascript/content.js"
      ],
      "css": [
        "css/content.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "javascript/initialize.js",
      "javascript/background.js"
    ],
    "persistent": true
  },
  "options_page": "html/options.html"
}