Pass delay and timestamp to AudioSourceCallback::OnMoreData.

media/audio/mac/audio_auhal_mac.h

Index: media/audio/mac/audio_auhal_mac.h
diff --git a/media/audio/mac/audio_auhal_mac.h b/media/audio/mac/audio_auhal_mac.h
index b6f14f96093fb0dd239cecae9e280a51647978c3..7c68a6c9ab0b0267bf2e55544072999f121f954d 100644
--- a/media/audio/mac/audio_auhal_mac.h
+++ b/media/audio/mac/audio_auhal_mac.h
@@ -29,6 +29,7 @@
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
+#include "base/time/time.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_manager.h"
 #include "media/base/audio_parameters.h"
@@ -131,8 +132,8 @@ class AUHALStream : public AudioOutputStream {
   // if not available.
   double GetHardwareLatency();
 
-  // Gets the current playout latency value.
-  double GetPlayoutLatency(const AudioTimeStamp* output_time_stamp);
+  // Gets the current target playout time.
+  base::TimeTicks GetTargetPlayoutTime(const AudioTimeStamp* output_time_stamp);
 
   // Updates playout timestamp, current lost frames, and total lost frames and
   // glitches.
@@ -191,8 +192,8 @@ class AUHALStream : public AudioOutputStream {
   // sizes.
   std::unique_ptr<AudioPullFifo> audio_fifo_;
 
-  // Current buffer delay.  Set by Render().
-  uint32_t current_hardware_pending_bytes_;
+  // Current target playout time.  Set by Render().
+  base::TimeTicks current_target_playout_time_;
 
   // Lost frames not yet reported to the provider. Increased in
   // UpdatePlayoutTimestamp() if any lost frame since last time. Forwarded to