Support (E)AC3 passthrough

chromecast/media/cma/base/decoder_config_adapter.cc

Index: chromecast/media/cma/base/decoder_config_adapter.cc
diff --git a/chromecast/media/cma/base/decoder_config_adapter.cc b/chromecast/media/cma/base/decoder_config_adapter.cc
index 544154fd8c6bfe80a397e5660d1677ebe8102876..a91e0e792b8b7da3dc3b8ef3cad8ee3ba26817ea 100644
--- a/chromecast/media/cma/base/decoder_config_adapter.cc
+++ b/chromecast/media/cma/base/decoder_config_adapter.cc
@@ -61,6 +61,8 @@ SampleFormat ToSampleFormat(const ::media::SampleFormat sample_format) {
       return kSampleFormatPlanarF32;
     case ::media::kSampleFormatPlanarS32:
       return kSampleFormatPlanarS32;
+    case ::media::kSampleFormatRaw:
+      return kUnknownSampleFormat;
   }
   NOTREACHED();
   return kUnknownSampleFormat;