Modifies AudioInputCallback::OnData and use media::AudioBus instead of plain byte vector

media/audio/virtual_audio_input_stream.cc

Index: media/audio/virtual_audio_input_stream.cc
diff --git a/media/audio/virtual_audio_input_stream.cc b/media/audio/virtual_audio_input_stream.cc
index f632d3bd995fec5686c99000508bd294da435786..5817487c5196bee1920cd3bfa59ba3774be9d7c4 100644
--- a/media/audio/virtual_audio_input_stream.cc
+++ b/media/audio/virtual_audio_input_stream.cc
@@ -139,12 +139,8 @@ void VirtualAudioInputStream::PumpAudio(AudioBus* audio_bus) {
     base::AutoLock scoped_lock(converter_network_lock_);
     mixer_.Convert(audio_bus);
   }
-  audio_bus->ToInterleaved(params_.frames_per_buffer(),
-                           params_.bits_per_sample() / 8,
-                           buffer_.get());
   callback_->OnData(this,
-                    buffer_.get(),
-                    params_.GetBytesPerBuffer(),
+                    audio_bus,
                     params_.GetBytesPerBuffer(),
                     1.0);
 }