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

media/audio/cras/cras_input.cc

Index: media/audio/cras/cras_input.cc
diff --git a/media/audio/cras/cras_input.cc b/media/audio/cras/cras_input.cc
index 0181d88a273490bff9e523178998811086203c49..afdabb21d1feb5a8fe50c419aca0952138b841c7 100644
--- a/media/audio/cras/cras_input.cc
+++ b/media/audio/cras/cras_input.cc
@@ -27,6 +27,7 @@ CrasInputStream::CrasInputStream(const AudioParameters& params,
       stream_direction_(device_id == AudioManagerBase::kLoopbackInputDeviceId ?
                             CRAS_STREAM_POST_MIX_PRE_DSP : CRAS_STREAM_INPUT) {
   DCHECK(audio_manager_);
+  audio_bus_ = AudioBus::Create(params_);
 }
 
 CrasInputStream::~CrasInputStream() {
@@ -222,11 +223,9 @@ void CrasInputStream::ReadAudio(size_t frames,
   double normalized_volume = 0.0;
   GetAgcVolume(&normalized_volume);
 
-  callback_->OnData(this,
-                    buffer,
-                    frames * bytes_per_frame_,
-                    bytes_latency,
-                    normalized_volume);
+  audio_bus_->FromInterleaved(
+      buffer, audio_bus_->frames(), params_.bits_per_sample() / 8);
+  callback_->OnData(this, audio_bus_.get(), bytes_latency, normalized_volume);
 }
 
 void CrasInputStream::NotifyStreamError(int err) {