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

{
  "name": "test",
  "manifest_version": 2,
  "description": "App with file_handlers manifest.",
  "version": "1",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "file_handlers": {
    "text": {
      "types": [
        "text/*"
      ]
    },
    "image": {
      "types": [
        "image/*"
      ],
      "extensions": [
        [".png"]
      ]
    }
  }
}