UXP-Fixed/devtools/client/aboutdebugging/test/addons/test-devtools-webextension-nobg/manifest.json

{
  "manifest_version": 2,
  "name": "test-devtools-webextension-nobg",
  "version": "1.0",
  "applications": {
    "gecko": {
      "id": "test-devtools-webextension-nobg@mozilla.org"
    }
  }
}