Remove AudioBuffersState usage in Chromium

media/audio/audio_output_controller.cc

Index: media/audio/audio_output_controller.cc
diff --git a/media/audio/audio_output_controller.cc b/media/audio/audio_output_controller.cc
index 45d308db3effd64f12394570200c1f90b515ea4f..a38bc526f29260d29536f4794503c3882d860939 100644
--- a/media/audio/audio_output_controller.cc
+++ b/media/audio/audio_output_controller.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/metrics/histogram.h"
+#include "base/numerics/safe_conversions.h"
 #include "base/task_runner_util.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
@@ -280,11 +281,11 @@ void AudioOutputController::DoReportError() {
 }
 
 int AudioOutputController::OnMoreData(AudioBus* dest,
-                                      AudioBuffersState buffers_state) {
+                                      uint32 total_bytes_delay) {
   TRACE_EVENT0("audio", "AudioOutputController::OnMoreData");
 
   // Indicate that we haven't wedged (at least not indefinitely, WedgeCheck()
-  // may have already fired if OnMoreIOData() took an abnormal amount of time).
+  // may have already fired if OnMoreData() took an abnormal amount of time).
   // Since this thread is the only writer of |on_more_io_data_called_| once the
   // thread starts, its safe to compare and then increment.
   if (base::AtomicRefCountIsZero(&on_more_io_data_called_))
@@ -293,8 +294,8 @@ int AudioOutputController::OnMoreData(AudioBus* dest,
   sync_reader_->Read(dest);
 
   const int frames = dest->frames();
-  sync_reader_->UpdatePendingBytes(
-      buffers_state.total_bytes() + frames * params_.GetBytesPerFrame());
+  sync_reader_->UpdatePendingBytes(base::saturated_cast<uint32>(
+      total_bytes_delay + frames * params_.GetBytesPerFrame()));
 
   if (will_monitor_audio_levels())
     power_monitor_.Scan(*dest, frames);