Examine source code of Insite Search

{
  "browser_action": {
    "default_icon": "logo_48.png",
    "default_title": "Search within the current site",
    "default_popup": "searchbar.html"
  },
  "description": "InSite Search",
  "icons": {
    "48": "logo_48.png",
    "96": "logo_96.png"
  },
  "manifest_version": 2,
  "name": "Search within the current site",
  "permissions": [
    "activeTab",
    "tabs",
    "contextMenus",
    "storage"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "version": "1.1"
}