Switch browser side audio capture path to use base time primitives.

media/audio/pulse/pulse_util.h

Index: media/audio/pulse/pulse_util.h
diff --git a/media/audio/pulse/pulse_util.h b/media/audio/pulse/pulse_util.h
index ecd7304ae049ee7dee0e4ebb679494a75959bb68..26595fbf564a2f3acd8d164969b93fff95858756 100644
--- a/media/audio/pulse/pulse_util.h
+++ b/media/audio/pulse/pulse_util.h
@@ -50,10 +50,6 @@ void WaitForOperationCompletion(pa_threaded_mainloop* mainloop,
 
 base::TimeDelta GetHardwareLatency(pa_stream* stream);
 
-int GetHardwareLatencyInBytes(pa_stream* stream,
-                              int sample_rate,
-                              int bytes_per_frame);
-
 // Create a recording stream for the threaded mainloop, return true if success,
 // otherwise false. |mainloop| and |context| have to be from a valid Pulse
 // threaded mainloop and the handle of the created stream will be returned by