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

media/device_monitors/device_monitor_udev.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.
 
 // libudev is used for monitoring device changes.
 
 #include "media/device_monitors/device_monitor_udev.h"
 
 #include <stddef.h>
 
@@ skipping 10 matching lines @@
   base::SystemMonitor::DeviceType device_type;
   const char* subsystem;
   const char* devtype;
 };
 
 const char kAudioSubsystem[] = "sound";
 const char kVideoSubsystem[] = "video4linux";
 
 // Add more subsystems here for monitoring.
 const SubsystemMap kSubsystemMap[] = {
-    {base::SystemMonitor::DEVTYPE_AUDIO_CAPTURE, kAudioSubsystem, NULL},
+    {base::SystemMonitor::DEVTYPE_AUDIO, kAudioSubsystem, NULL},
     {base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE, kVideoSubsystem, NULL},
 };
 
 }  // namespace
 
 namespace media {
 
 DeviceMonitorLinux::DeviceMonitorLinux(
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner)
     : io_task_runner_(io_task_runner) {
@@ skipping 37 matching lines @@
       device_type = entry.device_type;
       break;
     }
   }
   DCHECK_NE(device_type, base::SystemMonitor::DEVTYPE_UNKNOWN);
 
   base::SystemMonitor::Get()->ProcessDevicesChanged(device_type);
 }
 
 }  // namespace media