Make Prefilter::Info::Walker::PostVisit() handle kRegexpAnyByte too.
Make Prefilter::Info::Walker::PostVisit() handle kRegexpAnyByte too.

Change-Id: Ifc72419178ff459f0e3041fbd085f7a5edbbaf0f
Reviewed-on: https://code-review.googlesource.com/c/35010
Reviewed-by: Paul Wankadia <62d4e38bb1380f055ec4b899baa75e52af09c5f7@google.com>

google/re2,google/re2,google/re2,google/re2,google/re2