Implement timing frames.

webrtc/test/fuzzers/rtp_packet_fuzzer.cc

 /*
  *  Copyright (c) 2016 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 72 matching lines @@
         packet.GetExtension<TransportSequenceNumber>(&seqnum);
         break;
       case kRtpExtensionPlayoutDelay:
         PlayoutDelay playout;
         packet.GetExtension<PlayoutDelayLimits>(&playout);
         break;
       case kRtpExtensionVideoContentType:
         VideoContentType content_type;
         packet.GetExtension<VideoContentTypeExtension>(&content_type);
         break;
+      case kRtpExtensionVideoTiming:
+        VideoTiming timing;
+        packet.GetExtension<VideoTimingExtension>(&timing);
+        break;
       case kRtpExtensionRtpStreamId: {
         std::string rsid;
         packet.GetExtension<RtpStreamId>(&rsid);
         break;
       }
       case kRtpExtensionRepairedRtpStreamId: {
         std::string rsid;
         packet.GetExtension<RepairedRtpStreamId>(&rsid);
         break;
       }
     }
   }
 }
 }  // namespace webrtc