Add fuzzers for consumption by https://github.com/google/oss-fuzz

src/convert_woff2ttf_fuzzer.cc

@@ -0,0 +1,13 @@
+#include <stddef.h>
+#include <stdint.h>
+
+#include "woff2_dec.h"
+
+// Entry point for LibFuzzer.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  std::string buf;
+  woff2::WOFF2StringOut out(&buf);
+  out.SetMaxSize(30 * 1024 * 1024);
+  woff2::ConvertWOFF2ToTTF(data, size, &out);
+  return 0;
+}