Sync parserTests with core.

This matches upstream commit e07be1427ba6560fe8b08c720bfed9a2aa87f290.

It contains new parser tests for bug 44498 and bug 49400.  These bugs
are not yet fixed, so it also updates the blacklist to account for the
new failures.

Change-Id: Ib5ff2443dd29c85c2aef4a9638385e0ffbfb82cb