Making AudioManagerBase::ShutdownOnAudioThread() platform-agnostic

media/audio/win/audio_manager_win.cc

Index: media/audio/win/audio_manager_win.cc
diff --git a/media/audio/win/audio_manager_win.cc b/media/audio/win/audio_manager_win.cc
index 6b96668c5d3a9d05dc9089a3f74935177c84309e..2947f8b437ae60e3da1ceff385079165b0042799 100644
--- a/media/audio/win/audio_manager_win.cc
+++ b/media/audio/win/audio_manager_win.cc
@@ -155,8 +155,8 @@ AudioManagerWin::AudioManagerWin(std::unique_ptr<AudioThread> audio_thread,
 
 AudioManagerWin::~AudioManagerWin() = default;
 
-void AudioManagerWin::ShutdownOnAudioThread() {
-  AudioManagerBase::ShutdownOnAudioThread();
+void AudioManagerWin::ShutdownOnAudioThread(bool immediately) {
+  AudioManagerBase::ShutdownOnAudioThread(immediately);
 
   // Destroy AudioDeviceListenerWin instance on the audio thread because it
   // expects to be constructed and destroyed on the same thread.