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

media/audio/pulse/pulse_input.cc

Index: media/audio/pulse/pulse_input.cc
diff --git a/media/audio/pulse/pulse_input.cc b/media/audio/pulse/pulse_input.cc
index 9d31cddd735ff291713ae24c5e6e6f410008df8d..d5cb94ece22fa09dff7aed7e730d463de037b689 100644
--- a/media/audio/pulse/pulse_input.cc
+++ b/media/audio/pulse/pulse_input.cc
@@ -34,6 +34,8 @@ PulseAudioInputStream::PulseAudioInputStream(AudioManagerPulse* audio_manager,
       context_state_changed_(false) {
   DCHECK(mainloop);
   DCHECK(context);
+  CHECK(params_.IsValid());
+  audio_bus_ = AudioBus::Create(params_);
 }
 
 PulseAudioInputStream::~PulseAudioInputStream() {
@@ -272,8 +274,11 @@ void PulseAudioInputStream::ReadData() {
   int packet_size = params_.GetBytesPerBuffer();
   while (buffer_->forward_bytes() >= packet_size) {
     buffer_->Read(audio_data_buffer_.get(), packet_size);
-    callback_->OnData(this, audio_data_buffer_.get(), packet_size,
-                      hardware_delay, normalized_volume);
+    audio_bus_->FromInterleaved(audio_data_buffer_.get(),
+                                audio_bus_->frames(),
+                                params_.bits_per_sample() / 8);
+    callback_->OnData(
+        this, audio_bus_.get(), hardware_delay, normalized_volume);
 
     if (buffer_->forward_bytes() < packet_size)
       break;