Examine source code of SBE Sauvegarde Onglets

{
  "manifest_version": 2,
  "name": "SBE Navigateur Sauvegarde Onglets",
  "version": "1.1.3",
  "description": "Sauvegarde les onglets ouverts par fenetre et les restaure a la demande",
  "author": "sbellon",
  "permissions": [
    "tabs",
    "storage",
    "alarms"
  ],
  "optional_permissions": [
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "sbe-navigateur-sauvegarde-onglets@sbellon",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "authenticationInfo",
          "browsingActivity"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "icons/logo_48.png",
    "96": "icons/logo_96.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/logo_48.png",
      "96": "icons/logo_96.png"
    },
    "default_title": "SBE Navigateur Sauvegarde Onglets",
    "default_popup": "popup.html"
  }
}