Add enumerations for compressed (E)AC3 sample format

media/base/android/sdk_media_codec_bridge.cc

Index: media/base/android/sdk_media_codec_bridge.cc
diff --git a/media/base/android/sdk_media_codec_bridge.cc b/media/base/android/sdk_media_codec_bridge.cc
index 2fff742831806dd40812a023f1eba69d1081930c..092e7ccf4e5766c7327719cf1efa187a2ac29cea 100644
--- a/media/base/android/sdk_media_codec_bridge.cc
+++ b/media/base/android/sdk_media_codec_bridge.cc
@@ -60,6 +60,10 @@ static const std::string AudioCodecToAndroidMimeType(const AudioCodec& codec) {
       return "audio/opus";
     case kCodecAAC:
       return "audio/mp4a-latm";
+    case kCodecAC3:
+      return "audio/ac3";
+    case kCodecEAC3:
+      return "audio/eac3";
     default:
       return std::string();
   }