Express audio delay more precisely in frames rather than milliseconds.

media/renderers/audio_renderer_impl.h

Index: media/renderers/audio_renderer_impl.h
diff --git a/media/renderers/audio_renderer_impl.h b/media/renderers/audio_renderer_impl.h
index 32abaea3494b635121976436abd778ae5e38f98c..b18452793ac72338d933974264e03ea2b97d087d 100644
--- a/media/renderers/audio_renderer_impl.h
+++ b/media/renderers/audio_renderer_impl.h
@@ -155,7 +155,7 @@ class MEDIA_EXPORT AudioRendererImpl
   // this case |audio_delay_milliseconds| should be used to indicate when in the
   // future should the filled buffer be played.
   int Render(AudioBus* audio_bus,
-             uint32_t audio_delay_milliseconds,
+             uint32_t frames_delayed,
              uint32_t frames_skipped) override;
   void OnRenderError() override;