Delete browser MSE implementation.

media/filters/android/media_codec_audio_decoder.cc

Index: media/filters/android/media_codec_audio_decoder.cc
diff --git a/media/filters/android/media_codec_audio_decoder.cc b/media/filters/android/media_codec_audio_decoder.cc
index 961e462db56ae8f2e4509312b625c613a1a39d5c..cb55a1ce427ccf1ff5af2a43012bfcad98ae5e1c 100644
--- a/media/filters/android/media_codec_audio_decoder.cc
+++ b/media/filters/android/media_codec_audio_decoder.cc
@@ -113,8 +113,7 @@ bool MediaCodecAudioDecoder::CreateMediaCodecLoop() {
 
   jobject media_crypto_obj = media_crypto_ ? media_crypto_->obj() : nullptr;
 
-  if (!audio_codec_bridge->ConfigureAndStart(config_, false /* no AudioTrack */,
-                                             media_crypto_obj)) {
+  if (!audio_codec_bridge->ConfigureAndStart(config_, media_crypto_obj)) {
     DLOG(ERROR) << __FUNCTION__ << " failed: cannot configure audio codec for "
                 << config_.AsHumanReadableString();
     return false;