Make SystemMonitor report all audio device changes instead of just audio capture.

media/midi/midi_manager_win.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/midi/midi_manager_win.h"
 
 #include <windows.h>
 #include <ks.h>
 #include <ksmedia.h>
 #include <mmreg.h>
@@ skipping 536 matching lines @@
     }
   }
 
   // base::SystemMonitor::DevicesChangedObserver overrides:
   void OnDevicesChanged(base::SystemMonitor::DeviceType device_type) final {
     DCHECK(thread_checker_.CalledOnValidThread());
     if (destructor_started)
       return;
 
     switch (device_type) {
-      case base::SystemMonitor::DEVTYPE_AUDIO_CAPTURE:
+      case base::SystemMonitor::DEVTYPE_AUDIO:
       case base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE:
         // Add case of other unrelated device types here.
         return;
       case base::SystemMonitor::DEVTYPE_UNKNOWN:
         // Interested in MIDI devices. Try updating the device list.
         UpdateDeviceList();
         break;
         // No default here to capture new DeviceType by compile time.
     }
   }
@@ skipping 627 matching lines @@
 MidiManager* MidiManager::Create() {
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kUseWinrtMidiApi) &&
       base::win::GetVersion() >= base::win::VERSION_WIN10)
     return new MidiManagerWinrt();
   return new MidiManagerWin();
 }
 
 }  // namespace midi
 }  // namespace media