chromium/extensions/test/data/manifest_tests/event_rules.json

{
  "name": "extensions_unittests --gtest_filter=DeclarativeManifestTest.Valid",
  "version": "1",
  "manifest_version": 2,
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "event_rules": [{
    "event": "foo",
    "conditions": [{"type": "condition_type"}],
    "actions": [{"type": "action_type"}]
  }]
}