Examine source code of Save To IC Links

{
  "name": "Save To IC Links",
  "description": "This extension adds the current URL to IC Links bookmarking site.",
  "version": "1.1.2",
  "homepage_url": "http://iclinks.icsoft.com.au",
  "icons": {
    "16": "ICcropped16.png",
    "32": "ICcropped32.png",
    "48": "ICcropped48.png",
    "128": "ICcropped128.png"
  },
  "permissions": [
    "activeTab"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "browser_action": {
    "default_title": "Save to IC Links",
    "default_icon": "ICcropped16.png",
    "default_popup": "menu.html"
  },
  "manifest_version": 2
}