Forward the number of skipped frames by the OS in audio playout.

media/base/fake_audio_render_callback.cc

Index: media/base/fake_audio_render_callback.cc
diff --git a/media/base/fake_audio_render_callback.cc b/media/base/fake_audio_render_callback.cc
index 73d606ec3fb66f06f40e1584bc40c7a367ed1626..8d7ef20a8602319cecb4161723de102ea4921f5b 100644
--- a/media/base/fake_audio_render_callback.cc
+++ b/media/base/fake_audio_render_callback.cc
@@ -23,7 +23,8 @@ FakeAudioRenderCallback::FakeAudioRenderCallback(double step)
 FakeAudioRenderCallback::~FakeAudioRenderCallback() {}
 
 int FakeAudioRenderCallback::Render(AudioBus* audio_bus,
-                                    int audio_delay_milliseconds) {
+                                    uint32_t audio_delay_milliseconds,
+                                    uint32_t frames_skipped) {
   last_audio_delay_milliseconds_ = audio_delay_milliseconds;
   last_channel_count_ = audio_bus->channels();
 
@@ -46,7 +47,7 @@ int FakeAudioRenderCallback::Render(AudioBus* audio_bus,
 
 double FakeAudioRenderCallback::ProvideInput(AudioBus* audio_bus,
                                              base::TimeDelta buffer_delay) {
-  Render(audio_bus, buffer_delay.InMillisecondsF() + 0.5);
+  Render(audio_bus, buffer_delay.InMillisecondsF() + 0.5, 0);
   return volume_;
 }