Adds special support to the device manager for keyboards devices.

ui/events/keyboard_device.h

Index: ui/events/keyboard_device.h
diff --git a/ui/events/keyboard_device.h b/ui/events/keyboard_device.h
new file mode 100644
index 0000000000000000000000000000000000000000..e4d9f50199c2151ed2eacc65db694b76db7b60e4
--- /dev/null
+++ b/ui/events/keyboard_device.h
@@ -0,0 +1,32 @@
+// 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.
+
+#ifndef UI_EVENTS_KEYBOARD_DEVICE_H_
+#define UI_EVENTS_KEYBOARD_DEVICE_H_
+
+#include "ui/events/events_base_export.h"
+
+namespace ui {
+
+enum KeyboardDeviceType {
+  INTERNAL,
+  TEST,
+  EXTERNAL,
+};
+
+// Represents a Keyboard device state.
+struct EVENTS_BASE_EXPORT KeyboardDevice {
+
+  KeyboardDevice(int id, KeyboardDeviceType type);
+
+  // ID of the touch screen. This ID must uniquely identify the touch screen.

[dnicoara, 2014/10/02 13:58:20]

Fix comment

[rsadam, 2014/10/02 14:59:31]

Done.

+  int id;
+
+  // The type of the keyboard device.
+  KeyboardDeviceType type;
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_KEYBOARD_DEVICE_H_