Remove FlexfecConfig and replace with specific struct in VideoSendStream.

webrtc/video_send_stream.h

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 120 matching lines @@
 
       // RTP header extensions to use for this send stream.
       std::vector<RtpExtension> extensions;
 
       // See NackConfig for description.
       NackConfig nack;
 
       // See UlpfecConfig for description.
       UlpfecConfig ulpfec;
 
-      // See FlexfecConfig for description.
-      // TODO(brandtr): Move this config to a new class FlexfecSendStream
-      // when we support multistream protection.
-      FlexfecConfig flexfec;
+      struct Flexfec {
+        // Payload type of FlexFEC. Set to -1 to disable sending FlexFEC.
+        int payload_type = -1;
+
+        // SSRC of FlexFEC stream.
+        uint32_t ssrc = 0;
+
+        // Vector containing a single element, corresponding to the SSRC of the
+        // media stream being protected by this FlexFEC stream.
+        // The vector MUST have size 1.
+        //
+        // TODO(brandtr): Update comment above when we support
+        // multistream protection.
+        std::vector<uint32_t> protected_media_ssrcs;
+      } flexfec;
 
       // Settings for RTP retransmission payload format, see RFC 4588 for
       // details.
       struct Rtx {
         std::string ToString() const;
         // SSRCs to use for the RTX streams.
         std::vector<uint32_t> ssrcs;
 
         // Payload type to use for the RTX stream.
         int payload_type = -1;
@@ skipping 81 matching lines @@
     EnableEncodedFrameRecording(std::vector<rtc::PlatformFile>(), 0);
   }
 
  protected:
   virtual ~VideoSendStream() {}
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_SEND_STREAM_H_