Handle mp4a.a5 and mp4a.a6 codec ids in StringToAudioCodec

media/base/audio_codecs.cc

Index: media/base/audio_codecs.cc
diff --git a/media/base/audio_codecs.cc b/media/base/audio_codecs.cc
index 8aaa24f0394af4f52b22baed786c9c1ba1881212..09b191000b52b1148567b05ea17b4297937ad873 100644
--- a/media/base/audio_codecs.cc
+++ b/media/base/audio_codecs.cc
@@ -52,9 +52,9 @@ std::string GetCodecName(AudioCodec codec) {
 AudioCodec StringToAudioCodec(const std::string& codec_id) {
   if (codec_id == "aac")
     return kCodecAAC;
-  if (codec_id == "ac-3" || codec_id == "mp4a.A5")
+  if (codec_id == "ac-3" || codec_id == "mp4a.A5" || codec_id == "mp4a.a5")
     return kCodecAC3;
-  if (codec_id == "ec-3" || codec_id == "mp4a.A6")
+  if (codec_id == "ec-3" || codec_id == "mp4a.A6" || codec_id == "mp4a.a6")
     return kCodecEAC3;
   if (codec_id == "mp3")
     return kCodecMP3;