Adds a basic fuzzer for Http2DecoderAdapter.

Future improvements could include a dictionary or corpus.

PiperOrigin-RevId: 536418050
diff --git a/build/source_list.bzl b/build/source_list.bzl
index 8122118..70cd31f 100644
--- a/build/source_list.bzl
+++ b/build/source_list.bzl
@@ -1328,6 +1328,7 @@
     "quic/core/qpack/fuzzer/qpack_round_trip_fuzzer.cc",
     "quic/test_tools/fuzzing/quic_framer_fuzzer.cc",
     "quic/test_tools/fuzzing/quic_framer_process_data_packet_fuzzer.cc",
+    "spdy/core/http2_frame_decoder_adapter_fuzzer.cc",
 ]
 cli_tools_hdrs = [
     "quic/tools/quic_server_factory.h",