Examine source code of RequestModifier

{
  "manifest_version": 2,
  "name": "Request Modifier",
  "version": "1.3",
  "description": "为指定域名添加自定义请求头和清理指定域名的cookie",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "cookies",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Request Modifier",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "ustbcl@126.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}