setWebProcessExtensionsInitializationUserData
Set user data to be passed to Web Extensions on initialization.
The data will be passed to the #WebKitWebProcessExtensionInitializeWithUserDataFunction. This method must be called before loading anything in this context, otherwise it will not have any effect. You can connect to #WebKitWebContext::initialize-web-process-extensions to call this method before anything is loaded.
Since
2.4
Parameters
userData
a #GVariant