Examine source code of BetterBookmarks

{
  "manifest_version": 2,
  "name": "BetterBookmarks",
  "version": "1.1resigned1",
  "description": "Adds easily accessible bookmarks to the home page.",
  "permissions": [
    "bookmarks"
  ],
  "chrome_url_overrides": {
    "newtab": "src/index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "src/betterbookmarks.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{99b86f1e-d4ad-44f9-b85c-b3534dc5dfee}"
    }
  }
}