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

third_party/sqlite/BUILD.gn

Index: third_party/sqlite/BUILD.gn
diff --git a/third_party/sqlite/BUILD.gn b/third_party/sqlite/BUILD.gn
index 97ee6043991c501268c038421b865315d28c3926..4e8abcff5423976e24a2f637e29809c8c8f497f0 100644
--- a/third_party/sqlite/BUILD.gn
+++ b/third_party/sqlite/BUILD.gn
@@ -276,3 +276,14 @@ fuzzer_test("sqlite3_prepare_v2_fuzzer") {
   ]
   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"
+}