Replace RTC_DCHECK(false) with RTC_NOTREACHED().

webrtc/api/rtpsender.cc

 /*
  *  Copyright 2015 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 370 matching lines @@
     case VideoTrackInterface::ContentHint::kNone:
       break;
     case VideoTrackInterface::ContentHint::kFluid:
       options.is_screencast = rtc::Optional<bool>(false);
       break;
     case VideoTrackInterface::ContentHint::kDetailed:
       options.is_screencast = rtc::Optional<bool>(true);
       break;
   }
   if (!channel_->SetVideoSend(ssrc_, track_->enabled(), &options, track_)) {
-    RTC_DCHECK(false);
+    RTC_NOTREACHED();
   }
 }
 
 void VideoRtpSender::ClearVideoSend() {
   RTC_DCHECK(ssrc_ != 0);
   RTC_DCHECK(!stopped_);
   if (!channel_) {
     LOG(LS_WARNING) << "SetVideoSend: No video channel exists.";
     return;
   }
   // Allow SetVideoSend to fail since |enable| is false and |source| is null.
   // This the normal case when the underlying media channel has already been
   // deleted.
   channel_->SetVideoSend(ssrc_, false, nullptr, nullptr);
 }
 
 }  // namespace webrtc