Move device monitors out of //media/capture into //media/device_monitors

media/device_monitors/device_monitor_udev.h

 // 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.
 
 // This class is used to detect device change and notify base::SystemMonitor
 // on Linux.
 
-#ifndef MEDIA_CAPTURE_DEVICE_MONITOR_UDEV_H_
-#define MEDIA_CAPTURE_DEVICE_MONITOR_UDEV_H_
+#ifndef MEDIA_DEVICE_MONITORS_DEVICE_MONITOR_UDEV_H_
+#define MEDIA_DEVICE_MONITORS_DEVICE_MONITOR_UDEV_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
-#include "media/capture/capture_export.h"
+#include "media/base/media_export.h"
 
 extern "C" {
 struct udev_device;
 }
 
 namespace device {
 class UdevLinux;
 }
 
 namespace media {
 
-class CAPTURE_EXPORT DeviceMonitorLinux
+class MEDIA_EXPORT DeviceMonitorLinux
     : public base::MessageLoop::DestructionObserver {
  public:
   explicit DeviceMonitorLinux(
       const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
   ~DeviceMonitorLinux() override;
 
   // TODO(mcasas): Consider adding a StartMonitoring() method like
   // DeviceMonitorMac to reduce startup impact time.
 
  private:
   // This object is deleted on the constructor thread after |io_task_runner_|
   // has been destroyed. Need to know when the latter is being destroyed so that
   // we can delete |udev_|.
   void WillDestroyCurrentMessageLoop() override;
 
   void Initialize();
   void OnDevicesChanged(udev_device* device);
 
   const scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   std::unique_ptr<device::UdevLinux> udev_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceMonitorLinux);
 };
 
 }  // namespace media
 
-#endif  // MEDIA_CAPTURE_DEVICE_MONITOR_UDEV_H_
+#endif  // MEDIA_DEVICE_MONITORS_DEVICE_MONITOR_UDEV_H_