Normalize codec names to those used by AcmCodecDatabase.

webrtc/modules/audio_coding/codecs/g711/audio_encoder_pcm.h

Index: webrtc/modules/audio_coding/codecs/g711/audio_encoder_pcm.h
diff --git a/webrtc/modules/audio_coding/codecs/g711/audio_encoder_pcm.h b/webrtc/modules/audio_coding/codecs/g711/audio_encoder_pcm.h
index a98d2daa2421eff452a45b78945b47a8f00ad501..0c86c15070bbbd5e3e292374bfa89fa388c99e22 100644
--- a/webrtc/modules/audio_coding/codecs/g711/audio_encoder_pcm.h
+++ b/webrtc/modules/audio_coding/codecs/g711/audio_encoder_pcm.h
@@ -83,7 +83,7 @@ class AudioEncoderPcmA final : public AudioEncoderPcm {
   explicit AudioEncoderPcmA(const CodecInst& codec_inst);
   AudioEncoderPcmA(int payload_type, const SdpAudioFormat& format);
 
-  static constexpr const char* GetPayloadName() { return "pcma"; }
+  static constexpr const char* GetPayloadName() { return "PCMA"; }
   static rtc::Optional<AudioCodecInfo> QueryAudioEncoder(
       const SdpAudioFormat& format);
 
@@ -112,7 +112,7 @@ class AudioEncoderPcmU final : public AudioEncoderPcm {
   explicit AudioEncoderPcmU(const CodecInst& codec_inst);
   AudioEncoderPcmU(int payload_type, const SdpAudioFormat& format);
 
-  static constexpr const char* GetPayloadName() { return "pcmu"; }
+  static constexpr const char* GetPayloadName() { return "PCMU"; }
   static rtc::Optional<AudioCodecInfo> QueryAudioEncoder(
       const SdpAudioFormat& format);