Examine source code of OmniStart

{
  "manifest_version": 2,
  "name": "OmniStart",
  "version": "1.3.1resigned1",
  "description": "__MSG_manifest_description__",
  "author": "Olivier Meunier",
  "applications": {
    "gecko": {
      "id": "omnistart-ext@neokraft.net",
      "strict_min_version": "56.0"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "options_ui": {
    "browser_style": true,
    "chrome_style": true,
    "open_in_tab": false,
    "page": "options/options.html"
  },
  "permissions": [
    "<all_urls>",
    "bookmarks",
    "storage",
    "tabs",
    "unlimitedStorage"
  ],
  "default_locale": "en",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": {
      "24": "icons/action.svg"
    }
  }
}