PreParser now does not longer track which kind of error occurred.
If we see an error we reparse with the parser and report the error.
Furthermore, this fixes tests in test-parsing.

Change-Id: I1860949fab4d65ff4a5a1b63796c7574494f9d50
Reviewed-on: https://chromium-review.googlesource.com/1231173
Commit-Queue: Florian Sattler <sattlerf@google.com>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56281}