chromium/chrome/test/data/extensions/api_test/sync_file_system/get_usage_and_quota/manifest.json

{
  "name": "chrome.syncFileSystem.getUsageAndQuota",
  "version": "0.1",
  "manifest_version": 2,
  "description": "end-to-end browser test for chrome.syncFileSystem.getUsageAndQuota API",
  "permissions": ["syncFileSystem"],
  "app": {
    "background": {
      "scripts": ["test.js"]
    }
  }
}