[AudioManagerWin] Prefer Core Audio API over wave

... to determine the number of audio devices.

Bug: 1007886
Change-Id: Ie89f02202819761d4835a12919be21176f08faca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2379761Reviewed-by: Olga Sharonova <olka@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Palak Agarwal <agpalak@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804702}

media/audio/win/audio_manager_win.cc

@@ -120,10 +120,16 @@ void AudioManagerWin::ShutdownOnAudioThread() {
 }
 
 bool AudioManagerWin::HasAudioOutputDevices() {
+  if (CoreAudioUtil::IsSupported())
+    return CoreAudioUtil::NumberOfActiveDevices(eRender) > 0;
+
   return (::waveOutGetNumDevs() != 0);
 }
 
 bool AudioManagerWin::HasAudioInputDevices() {
+  if (CoreAudioUtil::IsSupported())
+    return CoreAudioUtil::NumberOfActiveDevices(eCapture) > 0;
+
   return (::waveInGetNumDevs() != 0);
 }