Add a factory and defines for native Linux surfaces.

ui/base/linux/event_factory_evdev.h

+// Copyright (c) 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.
+
+#ifndef UI_BASE_LINUX_EVENT_FACTORY_EVDEV_H_
+#define UI_BASE_LINUX_EVENT_FACTORY_EVDEV_H_
+
+#include "base/memory/scoped_vector.h"
+#include "base/message_pump_libevent.h"
+#include "ui/base/ui_export.h"
+
+namespace ui {
+
+class TouchEventFromEvdevConverter;
+
+// Sets up and manages watcher instances for event sources in /dev/input/*.
+class UI_EXPORT EventFactoryEvdev {
+ public:
+  EventFactoryEvdev();
+  virtual ~EventFactoryEvdev();
+
+  // Opens /dev/input/* event sources as appropriate and set up watchers.
+  void CreateEvdevWatchers();
+ private:
+  // FileDescriptorWatcher instances for each watched source of events.
+  ScopedVector<TouchEventFromEvdevConverter> evdev_watchers_;
+  ScopedVector<base::MessagePumpLibevent::FileDescriptorWatcher>
+      fd_controllers_;
+
+  DISALLOW_COPY_AND_ASSIGN(EventFactoryEvdev);
+};
+
+}  // namespace ui
+
+#endif  // UI_BASE_LINUX_EVENT_FACTORY_EVDEV_H_