chromium/chrome/test/data/extensions/api_test/offscreen/tab_capture_streams/manifest.json

{
  "name": "Offscreen Document Test for chrome.tabCapture",
  "manifest_version": 3,
  "version": "0.1",
  "background": {"service_worker": "background.js"},
  "permissions": ["offscreen", "tabCapture", "activeTab"],
  "action": {}
}