Pass delay and timestamp to AudioSourceCallback::OnMoreData.

media/audio/win/waveout_output_win.cc

Index: media/audio/win/waveout_output_win.cc
diff --git a/media/audio/win/waveout_output_win.cc b/media/audio/win/waveout_output_win.cc
index 3ac72ed99be54eefbd274c4d91fd5c67f8ec60cf..85bc1624e5ecd6af6145f37764599cff8056e9b0 100644
--- a/media/audio/win/waveout_output_win.cc
+++ b/media/audio/win/waveout_output_win.cc
@@ -6,6 +6,7 @@
 
 #include "base/atomicops.h"
 #include "base/logging.h"
+#include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/win/audio_manager_win.h"
@@ -322,10 +323,12 @@ void PCMWaveOutAudioOutputStream::QueueNextPacket(WAVEHDR *buffer) {
   // return to us how many bytes were used.
   // TODO(fbarchard): Handle used 0 by queueing more.
 
-  // TODO(sergeyu): Specify correct hardware delay for |total_delay_bytes|.
-  uint32_t total_delay_bytes = pending_bytes_;
+  // TODO(sergeyu): Specify correct hardware delay for |delay|.
+  const base::TimeDelta delay = base::TimeDelta::FromSecondsD(
+      static_cast<double>(pending_bytes_) / format_.Format.nAvgBytesPerSec);
+  const base::TimeTicks target_playout_time = base::TimeTicks::Now() + delay;
   int frames_filled =
-      callback_->OnMoreData(audio_bus_.get(), total_delay_bytes, 0);
+      callback_->OnMoreData(target_playout_time, 0, audio_bus_.get());
   uint32_t used = frames_filled * audio_bus_->channels() *
                   format_.Format.wBitsPerSample / 8;