Reland "[Zucchini] (raw) Apply fuzzer"

This is a reland of f4a598ff5adfe27f8153bd36984ee9cb549f99e9

Windows cannot resolve #!/usr/bin/env python depending on how it is
configured. To fix this explicitly use python in the subprocess call.

Interestingly, the Tryjobs didn't catch this and only the official
build waterfall does...

Original change's description:
> [Zucchini] (raw) Apply fuzzer
>
> This is part of a series of Fuzzers to be added to Zucchini for
> security review. This tests the raw data patch application logic
> exercising the patch reader and apply process. It only covers ~20%
> of code in 100000 executions as the bulk of the remaining code is
> associated with the much more complex and expensive to fuzz reference
> related code.
>
> With the supplied seed corpus the fuzzer reaches approximately 11000
> execs/s.
>
> This found a couple bugs which are fixed in:
> https://chromium-review.googlesource.com/c/chromium/src/+/1028575
>
>
> Bug: 835341
> Change-Id: Idc1d862bfaa6eb6313f39e10536f4750c05ab863
> Reviewed-on: https://chromium-review.googlesource.com/1028570
> Commit-Queue: Calder Kitagawa <ckitagawa@google.com>
> Reviewed-by: Samuel Huang <huangs@chromium.org>
> Reviewed-by: Greg Thompson <grt@chromium.org>
> Reviewed-by: Max Moroz <mmoroz@chromium.org>
> Reviewed-by: Jonathan Metzman <metzman@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#557185}

Bug: 835341
Change-Id: I24e94dd0c2035d84c84636f0a0a30756ae7f0c36
Reviewed-on: https://chromium-review.googlesource.com/1052567
Commit-Queue: Calder Kitagawa <ckitagawa@google.com>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557286}
NOKEYCHECK=True
GitOrigin-RevId: 8e7c08d3d11c61d08ad05d3ebc283aa2d6bf7c91

1 files changed, 15 insertions, 0 deletions

diff --git a/fuzzers/file_pair.proto b/fuzzers/file_pair.proto
new file mode 100644
index 0000000..2216381
--- /dev/null
+++ b/fuzzers/file_pair.proto
@@ -0,0 +1,15 @@
+// Copyright 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+syntax = "proto2";
+
+package zucchini.fuzzers;
+
+// NEXT_TAG = 3
+message FilePair {
+  // File to generate patch from or apply patch to.
+  required bytes old_file = 1;
+  // New file to generate patch or the patch to apply.
+  required bytes new_or_patch_file = 2;
+}