Examine source code of Foyer - Speed Dial

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.6.2",
  "description": "__MSG_extensionDescription__",
  "default_locale": "ja",
  "permissions": [
    "storage",
    "unlimitedStorage",
    "tabs",
    "alarms",
    "<all_urls>"
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "background": {
    "scripts": [
      "js/storage.js",
      "js/background.js"
    ],
    "persistent": false
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "speeddial_public@addon",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}