Asynchronously clear the website data of the given @types modified in the past @timespan.
If @timespan is 0, all website data will be removed.
When the operation is finished, @callback will be called. You can then call
webkit_website_data_manager_clear_finish() to get the result of the operation.
Due to implementation limitations, this function does not currently delete
any stored cookies if @timespan is nonzero. This behavior may change in the
future.
Asynchronously clear the website data of the given @types modified in the past @timespan. If @timespan is 0, all website data will be removed.
When the operation is finished, @callback will be called. You can then call webkit_website_data_manager_clear_finish() to get the result of the operation.
Due to implementation limitations, this function does not currently delete any stored cookies if @timespan is nonzero. This behavior may change in the future.