Examine source code of Bookmarks Speed Dial

{
  "manifest_version": 2,
  "name": "BookmarksSpeedDial",
  "version": "19.0",
  "description": "Use your bookmarks as a beautiful speed dial new tab page",
  "browser_specific_settings": {
    "gecko": {
      "id": "bookmarksspeeddial@gabmus.org"
    }
  },
  "icons": {
    "48": "icons/bookmarks_speed_dial_48.png"
  },
  "permissions": [
    "bookmarks",
    "topSites",
    "tabs",
    "sessions",
    "storage"
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "options_ui": {
    "page": "newtab.html?options",
    "chrome_style": false,
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "newtab.html"
  ]
}