getSize
Gets the size of the data of types @types in a #WebKitWebsiteData.
Note that currently the data size is only known for %WEBKIT_WEBSITE_DATA_DISK_CACHE data type so for all other types 0 will be returned.
Return
the size of @website_data for the given @types.
Since
2.16
Parameters
types
a bitmask of #WebKitWebsiteDataTypes