chromium/chrome/test/data/extensions/back_forward_cache/content_script_all_frames/manifest.json

{
  "name": "BFCache test extension",
  "version": "0.1",
  "manifest_version": 2,
  "description": "A test extension that can be injected into all frames.",
  "permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "externally_connectable": {
    "matches": [
      "*://a.com/*"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}