Examine source code of Password Saving Switch

{
  "description": "Toggle password saving option more easily. Icons made by Freepik from www.flaticon.com.",
  "manifest_version": 2,
  "name": "Password Saving Switch",
  "version": "1.1resigned1",
  "icons": {
    "48": "icons/lock_on.svg",
    "96": "icons/lock_on.svg"
  },
  "background": {
    "scripts": [
      "PasswordSavingSwitch.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/lock_on.svg",
    "default_title": "Switch password saving"
  },
  "permissions": [
    "privacy"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bf09e578-d5da-46df-8a39-ec0196404c0d}"
    }
  }
}