Simplified AudioOutputStream interface.

media/audio/mac/audio_output_mac.h

Index: media/audio/mac/audio_output_mac.h
diff --git a/media/audio/mac/audio_output_mac.h b/media/audio/mac/audio_output_mac.h
index 60cf2b69204cd696653fee119a2720f86c9b414a..31128bce12da8e3880e490f2e3b9bcd61854e3c0 100644
--- a/media/audio/mac/audio_output_mac.h
+++ b/media/audio/mac/audio_output_mac.h
@@ -27,7 +27,7 @@ class PCMQueueOutAudioOutputStream : public AudioOutputStream {
   virtual ~PCMQueueOutAudioOutputStream();
 
   // Implementation of AudioOutputStream.
-  virtual bool Open(uint32 packet_size);
+  virtual bool Open();
   virtual void Close();
   virtual void Start(AudioSourceCallback* callback);
   virtual void Stop();
@@ -54,6 +54,8 @@ class PCMQueueOutAudioOutputStream : public AudioOutputStream {
   AudioSourceCallback* source_;
   // Our creator, the audio manager needs to be notified when we close.
   AudioManagerMac* manager_;
+  // Packet size in bytes.
+  uint32 packet_size_;
   // Number of bytes for making a silence buffer.
   int silence_bytes_;
   // Volume level from 0 to 1.