Examine source code of Search Memories

{
  "manifest_version": 2,
  "name": "Search Memories",
  "version": "1.1.0",
  "description": "Shows your search queries from years past",
  "permissions": [
    "history"
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "icons": {
    "32": "icon.png",
    "64": "icon@2x.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d8648d66-a1fc-4153-9423-9b0a766cc12c}"
    }
  }
}