Remove kProtectionKey* and VCMKeyRequestMode.

webrtc/modules/video_coding/main/source/video_sender.cc

 /*
  *  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 293 matching lines @@
       break;
     case kProtectionNack:
       _mediaOpt.SetProtectionMethod(media_optimization::kNack);
       break;
     case kProtectionNackFEC:
       _mediaOpt.SetProtectionMethod(media_optimization::kNackFec);
       break;
     case kProtectionFEC:
       _mediaOpt.SetProtectionMethod(media_optimization::kFec);
       break;
-    case kProtectionKeyOnLoss:
-    case kProtectionKeyOnKeyLoss:
-      // Ignore receiver modes.
-      return;
   }
 }
 // Add one raw video frame to the encoder, blocking.
 int32_t VideoSender::AddVideoFrame(const VideoFrame& videoFrame,
                                    const VideoContentMetrics* contentMetrics,
                                    const CodecSpecificInfo* codecSpecificInfo) {
   UpdateEncoderParameters();
   CriticalSectionScoped cs(_sendCritSect);
   if (_encoder == nullptr) {
     return VCM_UNINITIALIZED;
@@ skipping 74 matching lines @@
   int window_bps = std::max(threshold_bps / 10, 10000);
   _mediaOpt.SuspendBelowMinBitrate(threshold_bps, window_bps);
 }
 
 bool VideoSender::VideoSuspended() const {
   CriticalSectionScoped cs(_sendCritSect);
   return _mediaOpt.IsVideoSuspended();
 }
 }  // namespace vcm
 }  // namespace webrtc