chromium/chrome/test/data/extensions/no_immediate_update_extension/src-1.0/manifest.json

{
  "name": "No Immediate Update Extension",
  "version": "1.0",
  "manifest_version": 2,
  "description": "The extension that prevents immediate updates",
  "background": {
    "scripts": ["background.js"],
    "persistent": true
  }
}