Make CodecType conversion functions non-optional.

webrtc/video/video_stream_encoder.cc

 /*
  *  Copyright (c) 2012 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 369 matching lines @@
                        const VideoSendStream::Config::EncoderSettings& settings,
                        rtc::VideoSinkInterface<VideoFrame>* pre_encode_callback,
                        EncodedFrameObserver* encoder_timing,
                        std::unique_ptr<OveruseFrameDetector> overuse_detector)
     : shutdown_event_(true /* manual_reset */, false),
       number_of_cores_(number_of_cores),
       initial_rampup_(0),
       source_proxy_(new VideoSourceProxy(this)),
       sink_(nullptr),
       settings_(settings),
-      codec_type_(PayloadNameToCodecType(settings.payload_name)
-                      .value_or(VideoCodecType::kVideoCodecUnknown)),
+      codec_type_(PayloadStringToCodecType(settings.payload_name)),
       video_sender_(Clock::GetRealTimeClock(), this, this),
       overuse_detector_(
           overuse_detector.get()
               ? overuse_detector.release()
               : new OveruseFrameDetector(
                     GetCpuOveruseOptions(settings.full_overuse_time),
                     this,
                     encoder_timing,
                     stats_proxy)),
       stats_proxy_(stats_proxy),
@@ skipping 850 matching lines @@
 std::string VideoStreamEncoder::AdaptCounter::ToString(
     const std::vector<int>& counters) const {
   std::stringstream ss;
   for (size_t reason = 0; reason < kScaleReasonSize; ++reason) {
     ss << (reason ? " cpu" : "quality") << ":" << counters[reason];
   }
   return ss.str();
 }
 
 }  // namespace webrtc