chromium/chrome/test/data/extensions/api_test/messaging/connect_crash/manifest.json

{
  "name": "connect_crash",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Tests that the port is disconnect if the tab crashes.",
  "background": {
    "scripts": ["test.js"]
  },
  "content_scripts": [{
    "matches": ["*://*/*"],
    "js": ["page.js"]
  }]
}