Now run EndToEndTest with the WebRTC-NewVideoJitterBuffer experiment.

webrtc/modules/video_coding/rtp_frame_reference_finder.cc

Index: webrtc/modules/video_coding/rtp_frame_reference_finder.cc
diff --git a/webrtc/modules/video_coding/rtp_frame_reference_finder.cc b/webrtc/modules/video_coding/rtp_frame_reference_finder.cc
index 5a9420a84776e168834ae2f69f8a2ec5e4d7c188..3d5283378fb57911df9d2b1b636bb0d045233040 100644
--- a/webrtc/modules/video_coding/rtp_frame_reference_finder.cc
+++ b/webrtc/modules/video_coding/rtp_frame_reference_finder.cc
@@ -43,7 +43,6 @@ void RtpFrameReferenceFinder::ManageFrame(
     case kVideoCodecFlexfec:
     case kVideoCodecULPFEC:
     case kVideoCodecRED:
-    case kVideoCodecUnknown:
       RTC_NOTREACHED();
       break;
     case kVideoCodecVP8:
@@ -52,6 +51,11 @@ void RtpFrameReferenceFinder::ManageFrame(
     case kVideoCodecVP9:
       ManageFrameVp9(std::move(frame));
       break;
+    // Since the EndToEndTests use kVicdeoCodecUnknow we treat it the same as
+    // kVideoCodecGeneric.
+    // TODO(philipel): Take a look at the EndToEndTests and see if maybe they
+    //                 should be changed to use kVideoCodecGeneric instead.
+    case kVideoCodecUnknown:
     case kVideoCodecH264:
     case kVideoCodecI420:
     case kVideoCodecGeneric: