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

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..60859472a2c214533ef405d2e897e18ef8b06938 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() {
@@ -222,8 +223,11 @@ void CrasInputStream::ReadAudio(size_t frames,
   double normalized_volume = 0.0;
   GetAgcVolume(&normalized_volume);
 
+  audio_bus_->FromInterleaved(buffer,
+                              audio_bus_->frames(),
+                              params_.bits_per_sample() / 8);
   callback_->OnData(this,
-                    buffer,
+                    audio_bus_.get(),
                     frames * bytes_per_frame_,
                     bytes_latency,
                     normalized_volume);