chromium/chrome/test/data/extensions/web_accessible_resources/web_request/redirect_from_page/manifest.json

{
  "name": "Test",
  "version": "0.0.1",
  "manifest_version": 2,
  "description": "Test",
  "background": {"scripts": ["background.js"]},
  "web_accessible_resources": ["war.js"],
  "permissions": ["webRequest", "webRequestBlocking", "<all_urls>"]
}