Remove AudioBuffersState usage in Chromium

media/audio/audio_io.h

Index: media/audio/audio_io.h
diff --git a/media/audio/audio_io.h b/media/audio/audio_io.h
index 1e1eba420b14aa049bacbf91a9841ec452e1c6ed..f8fd07a59770aeedf317c559aa4da4d36e661fde 100644
--- a/media/audio/audio_io.h
+++ b/media/audio/audio_io.h
@@ -58,10 +58,16 @@ class MEDIA_EXPORT AudioOutputStream {
   class MEDIA_EXPORT AudioSourceCallback {
    public:
     // Provide more data by fully filling |dest|.  The source will return
-    // the number of frames it filled.  |buffers_state| contains current state
-    // of the buffers, and can be used by the source to calculate delay.
-    virtual int OnMoreData(AudioBus* dest,
-                           AudioBuffersState buffers_state) = 0;
+    // the number of frames it filled.  |total_bytes_delay| contains current
+    // number of bytes of delay buffered by the AudioOutputStream.
+    //
+    // TODO(acolwell): Remove default implementation of this method once
+    // the AudioBuffersState version below is removed.
+    virtual int OnMoreData(AudioBus* dest, int total_bytes_delay);
+
+    // TODO(acolwell): Remove this once all dependencies on AudioBufferState
+    // that are outside the main Chromium repository have been removed.
+    virtual int OnMoreData(AudioBus* dest, AudioBuffersState buffers_state);
 
     // There was an error while playing a buffer. Audio source cannot be
     // destroyed yet. No direct action needed by the AudioStream, but it is