Add MediaCodecAudioDecoder implementation

media/base/decoder_buffer.h

Index: media/base/decoder_buffer.h
diff --git a/media/base/decoder_buffer.h b/media/base/decoder_buffer.h
index 9010eaa3172d655d59625d67728a4ccb272216ae..25a1ed3dee3a4afc1e694cb9d4c42804af005dbd 100644
--- a/media/base/decoder_buffer.h
+++ b/media/base/decoder_buffer.h
@@ -175,6 +175,9 @@ class MEDIA_EXPORT DecoderBuffer
   // Returns a human-readable string describing |*this|.
   std::string AsHumanReadableString();
 
+  // Returns a shorter version of the above.
+  std::string AsShortString();

[xhwang, 2016/02/01 19:30:55]

How about just add a "bool verbose" parameter in AsHumanReadableString()?

[Tima Vaisburd, 2016/02/04 22:59:12]

Added a flag instead. AsHumanReadableString(true) will require an explanation,
and AsHumanReadableString(kShortFormat) hopefully not. But it is quite verbose
for a programmer...

+
   // Replaces any existing side data with data copied from |side_data|.
   void CopySideDataFrom(const uint8_t* side_data, size_t side_data_size);