Examine source code of comprigo

{
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.1.7resigned1",
  "short_name": "__MSG_shortName__",
  "manifest_version": 2,
  "icons": {
    "48": "img/active48.png",
    "128": "img/active128.png"
  },
  "permissions": [
    "http://*/",
    "https://*/",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background_script.js",
      "browser_action.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "img/inactive19.png",
      "38": "img/inactive38.png"
    },
    "default_title": "__MSG_extName__"
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [],
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "{53220964-6aa9-49e8-a8d5-5fd70eeaf43c}"
    }
  }
}