Examine source code of OneClick

{
  "name": "OneClick",
  "short_name": "1click",
  "description": "Navigate to your favorite actions on the websites you love with just one click.",
  "version": "1.2.5",
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "OneClick"
  },
  "icons": {
    "16": "logo16.png",
    "48": "logo48.png",
    "128": "logo128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{649a1e6d-1709-436c-919d-3e2e5dc317ea}"
    }
  }
}