AudioConverter: Express delay in frames rather than msec.

media/base/loopback_audio_converter.cc

Index: media/base/loopback_audio_converter.cc
diff --git a/media/base/loopback_audio_converter.cc b/media/base/loopback_audio_converter.cc
index 0ae3df1d8cce443a1b6e259b8134ef13509e4119..3b16b96b0d1fa73b7dab3bc0a6df979e3560f234 100644
--- a/media/base/loopback_audio_converter.cc
+++ b/media/base/loopback_audio_converter.cc
@@ -15,8 +15,8 @@ LoopbackAudioConverter::LoopbackAudioConverter(
 LoopbackAudioConverter::~LoopbackAudioConverter() {}
 
 double LoopbackAudioConverter::ProvideInput(AudioBus* audio_bus,
-                                            base::TimeDelta buffer_delay) {
-  audio_converter_.ConvertWithDelay(buffer_delay, audio_bus);
+                                            uint32_t frames_delayed) {
+  audio_converter_.ConvertWithDelay(frames_delayed, audio_bus);
   return 1.0;
 }