Introduce some more specific parser error localizations

Change-Id: I2a8bb22302a1801a2ff2a75fb47134b35f0f825c
Cleanup mockups and docs related to localized error parameters

This is a direct follow-up to change
I2240d6e0ced47fc2ab1eb5795073c185e6ad336f (bug 64308).

Change-Id: I57f6c76bf54ae09dcc9be55aab28b666c9d6b029
Merge "Introduce some more specific parser error localizations"