Examine source code of ymarks

{
  "manifest_version": 2,
  "name": "ymarks",
  "version": "1.1.1resigned1",
  "description": "The official ymarks browser extension.",
  "icons": {
    "32": "icons/ymarks-32.png"
  },
  "permissions": [
    "bookmarks",
    "storage",
    "notifications",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/ymarks-32.png",
    "default_title": "ymarks",
    "default_popup": "popup/ymarks.html"
  },
  "options_ui": {
    "browser_style": true,
    "page": "options/options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2e75620b-e328-467a-b4c4-4832773acbbc}"
    }
  }
}