Examine source code of Custom Search Advanced

{
  "manifest_version": 2,
  "name": "Text Search Translator",
  "description": "__MSG_extensionDescription__",
  "version": "1.0",
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png",
    "128": "icons/logo_128.png"
  },
  "permissions": [
    "contextMenus",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/logo_64.png",
    "default_title": "Text Search Translator",
    "default_popup": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cef85ff8-7bae-483d-a065-aaac6b2df50d}"
    }
  }
}