Add FEC producer fuzzing and a unittest for one of the issues found.

webrtc/test/fuzzers/BUILD.gn

 # Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("//build/config/features.gni")
 import("//testing/test.gni")
@@ skipping 34 matching lines @@
     "../../modules/video_coding/",
   ]
 
   if (is_clang) {
     # Suppress warnings from Chrome's Clang plugins.
     # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
     configs -= [ "//build/config/clang:find_bad_constructs" ]
   }
 }
 
+test("producer_fec_fuzzer") {
+  sources = [
+    "producer_fec_fuzzer.cc",
+  ]
+  deps = [
+    ":webrtc_fuzzer_main",
+    "../../modules/rtp_rtcp/",
+  ]
+
+  if (is_clang) {
+    # Suppress warnings from Chrome's Clang plugins.
+    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+    configs -= [ "//build/config/clang:find_bad_constructs" ]
+  }
+}
+
 source_set("audio_decoder_fuzzer") {
   sources = [
     "audio_decoder_fuzzer.cc",
     "audio_decoder_fuzzer.h",
   ]
   deps = [
     ":webrtc_fuzzer_main",
   ]
 }
 
@@ skipping 29 matching lines @@
 
 test("audio_decoder_opus_fuzzer") {
   sources = [
     "audio_decoder_opus_fuzzer.cc",
   ]
   deps = [
     ":audio_decoder_fuzzer",
     "../../modules/audio_coding:webrtc_opus",
   ]
 }