As of r163823, in private browsing mode, application cache is blocked with a specific behavior (raising errors when blocking the cache). However, the third-party data blocking approach silently fails. We should bring the third-party data blocking approach in line with the new behavior for application cache blocking.
Created attachment 223792 [details]
Committed r163914: <http://trac.webkit.org/changeset/163914>
This caused the following regression:
REGRESSION (r163914): Application cache cannot be used in main frame