chromium/chrome/test/data/extensions/platform_apps/web_view/two_iframes_web_request/manifest.json

{
  "name": "Platform App Test: webview webRequest regression crbug.com/1309302",
  "manifest_version": 2,
  "version": "2",
  "permissions": [
    "webview"
  ],
  "app": {
    "background": {
      "scripts": ["test.js"]
    }
  }
}