Add DeviceMonitorLinux in BrowserMainLoop.

content/browser/devices_monitor/devices_monitor_linux.h

+// Copyright (c) 2012 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 implements content::DevicesMonitor on Linux.
+
+#ifndef CONTENT_BROWSER_DEVICES_MONITOR_DEVICES_MONITOR_LINUX_H_
+#define CONTENT_BROWSER_DEVICES_MONITOR_DEVICES_MONITOR_LINUX_H_
+
+#include <set>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/browser/devices_monitor/devices_monitor.h"
+
+extern "C" {
+struct udev_device;
+}
+
+namespace content {
+
+class UdevLinux;
+
+class DevicesMonitorLinux : public DevicesMonitor {
+ public:
+  DevicesMonitorLinux();
+  virtual ~DevicesMonitorLinux();
+
+  virtual void Start(base::SystemMonitor::DevicesChangedObserver*) OVERRIDE;
+  virtual void Stop(base::SystemMonitor::DevicesChangedObserver*) OVERRIDE;
+
+ private:
+  void OnDevicesChanged(udev_device* device);
+
+  scoped_ptr<UdevLinux> udev_;
+  std::set<base::SystemMonitor::DevicesChangedObserver*> observers_;
+
+  DISALLOW_COPY_AND_ASSIGN(DevicesMonitorLinux);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_DEVICES_MONITOR_DEVICES_MONITOR_LINUX_H_