chrome 拡張 manifest v3 でレスポンスヘッダーを書き換える。この場合twitter.comのiframe表示を許可している

manifest.json

{
  "manifest_version": 3,
  "name": "Twitterスパム通報",
  "version": "1.0",
  "permissions": [
    "browsingData",
    "declarativeNetRequest"
  ],
  "description": "スパム自動通報Chrome拡張",
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "host_permissions": ["*://*.twitter.com/"],
  "icons": {
    "16": "icon/icon16.png",
    "32": "icon/icon32.png",
    "48": "icon/icon48.png",
    "128": "icon/icon128.png"
  },
  "author": "Yuu (@mouse_soft_y)",
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_1",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  }
}

rules.json

[
  {
  "id": 1,
  "priority": 1,
  "action": {
    "type": "modifyHeaders",
    "responseHeaders": [{ "header": "X-Frame-Options", "operation": "remove" }]
  },
  "condition": { "resourceTypes": ["main_frame", "sub_frame"] }
}
]