extensions/test/data/api_test/usb/add_event/manifest.json

{
  "name": "chrome.usb.onDeviceAdded",
  "manifest_version": 2,
  "version": "0.1",
  "description": "browser test for chrome.usb.onDeviceAdded event",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "permissions": [
    "usb",
    // This is a test device emulated by the mocks enabled for the test.
    { "usbDevices": [{ "vendorId": 6353, "productId": 22768 }]}
  ]
}