Add ossfuzz.c fuzzer for sqlite3 (taken from the upstream).

third_party/sqlite/BUILD.gn

 # Copyright (c) 2013 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("//testing/libfuzzer/fuzzer_test.gni")
 
 declare_args() {
   # Controls whether the build should uses the version of sqlite3 library
   # shipped with the system (currently only supported on iOS) or the one
   # shipped with Chromium source.
@@ skipping 258 matching lines @@
 
 fuzzer_test("sqlite3_prepare_v2_fuzzer") {
   sources = [
     "fuzz/sqlite3_prepare_v2_fuzzer.cc",
   ]
   deps = [
     ":sqlite",
   ]
   dict = "fuzz/sqlite3_prepare_v2_fuzzer.dict"
 }
+
+fuzzer_test("sqlite3_ossfuzz_fuzzer") {
+  # TODO(mmoroz, shess): remove fuzz/ossfuzz.c after next sqlite3 update.

[Scott Hess - ex-Googler, 2016/11/22 19:14:14]

Just for my info, you mean replace that reference with src/test/ossfuzz.c?

[mmoroz, 2016/11/22 20:11:34]

Yes, replace it + remove 'fuzz/ossfuzz.c' file from the repo.

+  sources = [
+    "fuzz/ossfuzz.c",
+  ]
+  deps = [
+    ":sqlite",
+  ]
+  dict = "fuzz/sql.dict"
+}