On FATAL, log which unsupported encoder the caller wanted us to create

webrtc/modules/audio_coding/main/acm2/codec_owner.cc

Index: webrtc/modules/audio_coding/main/acm2/codec_owner.cc
diff --git a/webrtc/modules/audio_coding/main/acm2/codec_owner.cc b/webrtc/modules/audio_coding/main/acm2/codec_owner.cc
index ed23e10b563f6f0b02e940db3083a719b1b2fe39..2f7228bf713b6c55a085804d6dadd8f3a1380946 100644
--- a/webrtc/modules/audio_coding/main/acm2/codec_owner.cc
+++ b/webrtc/modules/audio_coding/main/acm2/codec_owner.cc
@@ -127,7 +127,7 @@ rtc::scoped_ptr<AudioEncoderMutable> CreateSpeechEncoder(
   } else if (IsG722(speech_inst)) {
     return rtc_make_scoped_ptr(new AudioEncoderMutableG722(speech_inst));
   } else {
-    FATAL();
+    FATAL() << "Could not create encoder of type " << speech_inst.plname;
     return rtc::scoped_ptr<AudioEncoderMutable>();
   }
 }