Remove VideoEncoder::SetChannelParameters.

The SetChannelParameters function was used when WebRTC supported decoding
with errors, which we no longer do.

This cleanup CL is related to the work tracked by 9946.

Bug: webrtc:9946
Change-Id: Id2d5ed23031388f890c42651bfbe5f79eda701e5
Reviewed-on: https://webrtc-review.googlesource.com/c/108861
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25505}

sdk/android/api/org/webrtc/VideoEncoder.java

@@ -216,7 +216,12 @@ public interface VideoEncoder {
    * @param packetLoss How many packets are lost on average per 255 packets.
    * @param roundTripTimeMs Round-trip time of the network in milliseconds.
    */
-  @CalledByNative VideoCodecStatus setChannelParameters(short packetLoss, long roundTripTimeMs);
+  // TODO(webrtc:9946): Remove this function when downstream projects have been
+  //                    updated.
+  @Deprecated
+  default VideoCodecStatus setChannelParameters(short packetLoss, long roundTripTimeMs) {
+    return VideoCodecStatus.OK;
+  }
 
   /** Sets the bitrate allocation and the target framerate for the encoder. */
   @CalledByNative VideoCodecStatus setRateAllocation(BitrateAllocation allocation, int framerate);