Revert "Chrome uses also <anonymous> strings in stack traces."

This reverts commit 1395f917542e1f35db9dba7b8c236913af934bd8.
Revert "Allow custom caller paths to be ignored."

This reverts commit 63b1a37cc55418bd9690a64b8ed127b1575ca95c.
Revert "Better parse caller file path in Log._getCallerDetails."

This reverts commit 76f4c76a9cabc4bc21370993ee81c4fec672a5dd.