Examine source code of New Tab Bookmark

{
  "manifest_version": 2,
  "name": "New Tab Bookmarks",
  "version": "0.4.2resigned1",
  "description": "Replace new tab page with a list of your bookmarks menu.",
  "homepage_url": "https://github.com/kyamuise/new-tab-bookmarks",
  "icons": {},
  "developer": {
    "name": "Koji Yamamoto"
  },
  "chrome_url_overrides": {
    "newtab": "src/index.html"
  },
  "permissions": [
    "bookmarks",
    "storage"
  ],
  "options_ui": {
    "page": "src/settings/options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b1ca22b9-5fa5-4f70-873b-06704459bde8}"
    }
  }
}