MediaLog: Log selected audio/video decoder name.

media/filters/decoder_stream.cc

Index: media/filters/decoder_stream.cc
diff --git a/media/filters/decoder_stream.cc b/media/filters/decoder_stream.cc
index b3d58aecbbb48a1386d66836fe117a0a72759763..21124c1f25a207b1306e9db4eb3f24bc4807307c 100644
--- a/media/filters/decoder_stream.cc
+++ b/media/filters/decoder_stream.cc
@@ -42,8 +42,10 @@ template <DemuxerStream::Type StreamType>
 DecoderStream<StreamType>::DecoderStream(
     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
     ScopedVector<Decoder> decoders,
-    const SetDecryptorReadyCB& set_decryptor_ready_cb)
+    const SetDecryptorReadyCB& set_decryptor_ready_cb,
+    const LogCB& log_cb)
     : task_runner_(task_runner),
+      log_cb_(log_cb),
       state_(STATE_UNINITIALIZED),
       stream_(NULL),
       low_delay_(false),
@@ -236,6 +238,10 @@ void DecoderStream<StreamType>::OnDecoderSelected(
   decoder_ = selected_decoder.Pass();
   decrypting_demuxer_stream_ = decrypting_demuxer_stream.Pass();
 
+  if (decrypting_demuxer_stream_)
+    MEDIA_LOG(log_cb_) << "DecryptingDemuxerStream selected";
+  MEDIA_LOG(log_cb_) << decoder_->GetDisplayName() << " selected";

[xhwang, 2014/09/08 17:31:21]

In chrome://media-internals, you'll see something like

INFO  |  FFmpegVideoDecoder selected

+
   if (StreamTraits::NeedsBitstreamConversion(decoder_.get()))
     stream_->EnableBitstreamConverter();
   base::ResetAndReturn(&init_cb_).Run(true);