Asynchronously get the cookie acceptance policy of @cookie_manager.
Note that when policy was set to %WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY and
ITP is enabled, this will return %WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS.
See also webkit_website_data_manager_set_itp_enabled().
When the operation is finished, @callback will be called. You can then call
webkit_cookie_manager_get_accept_policy_finish() to get the result of the operation.
Asynchronously get the cookie acceptance policy of @cookie_manager. Note that when policy was set to %WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY and ITP is enabled, this will return %WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS. See also webkit_website_data_manager_set_itp_enabled().
When the operation is finished, @callback will be called. You can then call webkit_cookie_manager_get_accept_policy_finish() to get the result of the operation.