Examine source code of Socialmezer

{
  "manifest_version": 2,
  "name": "Socialmezer",
  "description": "Quick launcher of social media",
  "version": "1.1resigned1",
  "icons": {
    "128": "icon_128.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e0e04e59-03c9-49bf-88e0-30942e6b8508}"
    }
  }
}