Roll src/third_party/re2/src/ 89528a380..22caec620 (1 commit)

https://chromium.googlesource.com/external/github.com/google/re2.git/+log/89528a380a7e..22caec62055a

$ git log 89528a380..22caec620 --date=short --no-merges --format='%ad %ae %s'
2018-10-29 junyer Don't waste time fuzzing programs with large substrings.

Created with:
  roll-dep src/third_party/re2/src

R=mmoroz@chromium.org

Bug: 899899
Change-Id: I156d3208d36b212ec8d1e676dde8d676eb86946b
Reviewed-on: https://chromium-review.googlesource.com/c/1307234
Reviewed-by: Max Moroz <mmoroz@chromium.org>
Commit-Queue: Max Moroz <mmoroz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603898}