Examine source code of iThirdPartyRequestBlocker

{
  "description": "Block third party request for some sites.",
  "manifest_version": 2,
  "name": "iThirdPartyRequestBlocker",
  "version": "0.0.17",
  "permissions": [
    "<all_urls>",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ceee9906-9e1c-4853-bda9-324eaf07b617}"
    }
  }
}