Examine source code of Mobile proxy manager

{
  "manifest_version" : 2 ,
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "{dc70a50d-ef4b-4396-9481-3ea2c17423ad}",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "name" : "__MSG_extName__" ,
  "version" : "3.3.1",
  "description" : "__MSG_extDescription__" ,
  "background" : {
    "page": "src/pages/background/background.html"
  },
  "browser_action" : {
    "default_popup" : "src/pages/popup/index.html",
    "default_icon" : {
      "16" : "icons/16.png",
      "24" : "icons/24.png",
      "32" : "icons/32.png"
    }
  },
  "default_locale" : "en" ,
  "icons" : {
    "16" : "icons/16.png",
    "32" : "icons/32.png",
    "48" : "icons/48.png",
    "64" : "icons/64.png",
    "96" : "icons/96.png",
    "128" : "icons/128.png"
  },
  "permissions" : [
    "webRequest" ,
    "webRequestBlocking" ,
    "proxy" ,
    "downloads" ,
    "privacy" ,
    "storage" ,
    "<all_urls>" 
  ]
}