Unify VideoCodecType to/from string functionality

webrtc/media/engine/webrtcvideoengine2.cc

Index: webrtc/media/engine/webrtcvideoengine2.cc
diff --git a/webrtc/media/engine/webrtcvideoengine2.cc b/webrtc/media/engine/webrtcvideoengine2.cc
index 2016cf6d6fcf56a66bec7f0b042888b84aa97b57..4d0fbe76eaac65294e0830b4c40519098d6ef4db 100644
--- a/webrtc/media/engine/webrtcvideoengine2.cc
+++ b/webrtc/media/engine/webrtcvideoengine2.cc
@@ -1738,7 +1738,9 @@ void WebRtcVideoChannel2::WebRtcVideoSendStream::SetCodec(
   parameters_.config.encoder_settings.payload_name = codec_settings.codec.name;
   parameters_.config.encoder_settings.payload_type = codec_settings.codec.id;
   if (new_encoder.external) {
-    webrtc::VideoCodecType type = CodecTypeFromName(codec_settings.codec.name);
+    webrtc::VideoCodecType type =
+        webrtc::PayloadNameToCodecType(codec_settings.codec.name)
+            .value_or(webrtc::kVideoCodecUnknown);
     parameters_.config.encoder_settings.internal_source =
         external_encoder_factory_->EncoderTypeHasInternalSource(type);
   }
@@ -2177,7 +2179,8 @@ WebRtcVideoChannel2::WebRtcVideoReceiveStream::AllocatedDecoder
 WebRtcVideoChannel2::WebRtcVideoReceiveStream::CreateOrReuseVideoDecoder(
     std::vector<AllocatedDecoder>* old_decoders,
     const VideoCodec& codec) {
-  webrtc::VideoCodecType type = CodecTypeFromName(codec.name);
+  webrtc::VideoCodecType type = webrtc::PayloadNameToCodecType(codec.name)
+                                    .value_or(webrtc::kVideoCodecUnknown);
 
   for (size_t i = 0; i < old_decoders->size(); ++i) {
     if ((*old_decoders)[i].type == type) {