Add new codec for FlexFEC.

webrtc/media/engine/webrtcvideoengine2.cc

Index: webrtc/media/engine/webrtcvideoengine2.cc
diff --git a/webrtc/media/engine/webrtcvideoengine2.cc b/webrtc/media/engine/webrtcvideoengine2.cc
index d3e71a381f795ec286202c0bd6c034a9d3a72155..04321c40cd705f3910b598fe3af948a49bc56f9f 100644
--- a/webrtc/media/engine/webrtcvideoengine2.cc
+++ b/webrtc/media/engine/webrtcvideoengine2.cc
@@ -2509,6 +2509,11 @@ WebRtcVideoChannel2::MapCodecs(const std::vector<VideoCodec>& codecs) {
         continue;
       }
 
+      case VideoCodec::CODEC_FLEXFEC: {
+        // TODO(brandtr): To be implemented.
+        continue;
+      }
+
       case VideoCodec::CODEC_RTX: {
         int associated_payload_type;
         if (!in_codec.GetParam(kCodecParamAssociatedPayloadType,