[libfuzzer] in-vcs corpus support.

third_party/boringssl/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 
 # Config for us and everybody else depending on BoringSSL.
 config("openssl_config") {
@@ skipping 109 matching lines @@
   }
 }
 
 fuzzer_test("boringssl_d2i_x509_fuzzer") {
   sources = [
     "src/fuzz/cert.cc",
   ]
   deps = [
     ":boringssl",
   ]
+  seed_corpus = "src/fuzz/cert_corpus"
 }
 
 fuzzer_test("boringssl_client_bio_write_fuzzer") {
   sources = [
     "src/fuzz/client.cc",
   ]
   deps = [
     ":boringssl",
   ]
+  seed_corpus = "src/fuzz/client_corpus"
 }
 
 fuzzer_test("boringssl_d2i_autoprivatekey_fuzzer") {
   sources = [
     "src/fuzz/privkey.cc",
   ]
   deps = [
     ":boringssl",
   ]
+  seed_corpus = "src/fuzz/privkey_corpus"
 }
 
 fuzzer_test("boringssl_server_bio_write_fuzzer") {
   sources = [
     "src/fuzz/server.cc",
   ]
   deps = [
     ":boringssl",
   ]
+  seed_corpus = "src/fuzz/server_corpus"
 }