Add enumerations for compressed (E)AC3 sample format

content/browser/media/media_internals.cc

Index: content/browser/media/media_internals.cc
diff --git a/content/browser/media/media_internals.cc b/content/browser/media/media_internals.cc
index e53a547fcaf44159bbe8f083532cdce867677242..394830c828d09133f7ebb54db6b85c2bb95660c7 100644
--- a/content/browser/media/media_internals.cc
+++ b/content/browser/media/media_internals.cc
@@ -81,6 +81,10 @@ std::string FormatToString(media::AudioParameters::Format format) {
       return "pcm_linear";
     case media::AudioParameters::AUDIO_PCM_LOW_LATENCY:
       return "pcm_low_latency";
+    case media::AudioParameters::AUDIO_BITSTREAM_AC3:
+      return "ac3";
+    case media::AudioParameters::AUDIO_BITSTREAM_EAC3:
+      return "eac3";
     case media::AudioParameters::AUDIO_FAKE:
       return "fake";
   }