Examine source code of GP

{
  "name": "GP Extension",
  "description": "GP Extension for Firefox and Firefox Mobile",
  "version": "1.0.2.1",
  "manifest_version": 2,
  "icons": {
    "300": "300.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "gpextension4ff@gp.su",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "id": "gpextension4ff@gp.su",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_1",
        "enabled": true,
        "path": "./rules.json"
      }
    ]
  },
  "permissions": [
    "declarativeNetRequestWithHostAccess",
    "https://*.goplay.ml/",
    "https://*.goplay.su/",
    "https://*.cloudfront.net/",
    "https://*.akamaized.net/",
    "https://*.viu.com/",
    "https://ottuat.com/",
    "https://*.viki.io/",
    "https://*.viki.net/",
    "https://*.vikiplatform.com/",
    "https://img.gagaoolala.com/",
    "https://media.gagaoolala.com/"
  ]
}