Generalize FEC unit tests and rename GenerateFec. (pt. 3)

webrtc/test/fuzzers/producer_fec_fuzzer.cc

Index: webrtc/test/fuzzers/producer_fec_fuzzer.cc
diff --git a/webrtc/test/fuzzers/producer_fec_fuzzer.cc b/webrtc/test/fuzzers/producer_fec_fuzzer.cc
index 50a5e5e5cd79dab5f0ea403b337e93a464f74b5e..1741d5647cc8b94f7b85bf7987f3da06e6b23901 100644
--- a/webrtc/test/fuzzers/producer_fec_fuzzer.cc
+++ b/webrtc/test/fuzzers/producer_fec_fuzzer.cc
@@ -15,6 +15,13 @@
 #include "webrtc/modules/rtp_rtcp/source/fec_test_helper.h"
 #include "webrtc/modules/rtp_rtcp/source/producer_fec.h"
 
+namespace {
+
+constexpr uint8_t kFecPayloadType = 96;
+constexpr uint8_t kRedPayloadType = 97;
+
+}  // namespace
+
 namespace webrtc {
 
 void FuzzOneInput(const uint8_t* data, size_t size) {