AudioBus: Add a ToInterleavedFloat() method to AudioBus

media/base/audio_bus.h

Index: media/base/audio_bus.h
diff --git a/media/base/audio_bus.h b/media/base/audio_bus.h
index d6bd874bb0c7c6c148252e306eff94afed8331ee..d3ab52e5eb7612405ea150171bd6e6a2fff5b69f 100644
--- a/media/base/audio_bus.h
+++ b/media/base/audio_bus.h
@@ -66,6 +66,10 @@ class MEDIA_EXPORT AudioBus {
   // any unfilled frames when |frames| is less than frames().
   void FromInterleaved(const void* source, int frames, int bytes_per_sample);
   void ToInterleaved(int frames, int bytes_per_sample, void* dest) const;
+  void ToInterleavedFloat(int source_offset,
+                          int destination_offset,
+                          int num_channels,
+                          float* buffer) const;
   void ToInterleavedPartial(int start_frame, int frames, int bytes_per_sample,
                             void* dest) const;