Examine source code of Translation Comparison

{
  "background": {
    "scripts": [
      "content/js/db.js",
      "content/js/bg.js"
    ]
  },
  "browser_action": {
    "default_icon": "content/img/icon.png",
    "default_popup": "content/html/compare.html",
    "default_title": "__MSG_extName__"
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "content/js/content.js"
      ],
      "run_at": "document_end",
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "options_ui": {
    "page": "content/html/options/options.html",
    "chrome_style": false,
    "open_in_tab": true
  },
  "description": "__MSG_extDescription__",
  "icons": {
    "16": "content/img/icon16.png",
    "32": "content/img/icon32.png",
    "48": "content/img/icon48.png",
    "128": "content/img/icon128.png"
  },
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "short_name": "Translate",
  "default_locale": "en",
  "permissions": [
    "http://*/*",
    "https://*/*",
    "tabs",
    "contextMenus",
    "webRequestBlocking",
    "storage"
  ],
  "web_accessible_resources": [
    "content/html/compare.html",
    "content/img/util/home.png",
    "content/img/util/close.png"
  ],
  "version": "11.0",
  "applications": {
    "gecko": {
      "id": "kicpmhgmcajloefloefojbfdmenhmhjf@chrome-store-foxified-unsigned"
    }
  }
}