Refactor Udev device support in Ozone and add a DRM hotplug monitor

ui/events/ozone/device/device_event.cc

Index: ui/events/ozone/device/device_event.cc
diff --git a/ui/events/ozone/device/device_event.cc b/ui/events/ozone/device/device_event.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e20079a79cf78925c7a4a76df5c4c213daa58a45
--- /dev/null
+++ b/ui/events/ozone/device/device_event.cc
@@ -0,0 +1,16 @@
+// Copyright 2014 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 "ui/events/ozone/device/device_event.h"
+
+namespace ui {
+
+DeviceEvent::DeviceEvent(DeviceType type,
+                         ActionType action,
+                         const base::FilePath& path)
+    : device_type_(type),
+      action_type_(action),
+      path_(path) {}
+
+}  // namespace ui