CL is out here: https://chromium-review.googlesource.com/c/chromium/src/+/744330

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/66ca64074454e98829343bb2156b07958570b722

commit 66ca64074454e98829343bb2156b07958570b722
Author: Chris Blume <cblume@google.com>
Date: Sat Nov 04 11:12:55 2017

Add a fuzzer for zlib's deflate function

We want to cover all of zlib's external APIs.
deflate() currently isn't covered.

BUG= 779648 

Change-Id: I1d1ea523aa6caa2e468b9641dbf7f32c54724f38
Reviewed-on: https://chromium-review.googlesource.com/744330
Commit-Queue: Chris Blume <cblume@chromium.org>
Reviewed-by: Adenilson Cavalcanti <cavalcantii@chromium.org>
Reviewed-by: Max Moroz <mmoroz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#514045}
[modify] https://crrev.com/66ca64074454e98829343bb2156b07958570b722/third_party/zlib/BUILD.gn
[add] https://crrev.com/66ca64074454e98829343bb2156b07958570b722/third_party/zlib/contrib/tests/fuzzers/deflate_fuzzer.cc