Adds special support to the device manager for keyboards devices.

ui/events/ozone/evdev/event_factory_evdev.cc

 // 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/evdev/event_factory_evdev.h"
 
 #include <fcntl.h>
 #include <linux/input.h>
 
 #include "base/debug/trace_event.h"
@@ skipping 277 matching lines @@
     const EventConverterEvdev& converter) {
   // For now the only information propagated is related to touchscreens. Ignore
   // events for everything but touchscreens.
   if (!converter.HasTouchscreen())
     return;
 
   DeviceHotplugEventObserver* observer = DeviceDataManager::GetInstance();
   std::vector<TouchscreenDevice> touchscreens;
   for (auto it = converters_.begin(); it != converters_.end(); ++it) {
     if (it->second->HasTouchscreen()) {
-      touchscreens.push_back(TouchscreenDevice(it->second->id(),
-                                               it->second->GetTouchscreenSize(),
-                                               false /* is_internal */));
+      touchscreens.push_back(
+          TouchscreenDevice(it->second->id(),
+                            InputDeviceType::INPUT_DEVICE_EXTERNAL,
+                            std::string(), /* Device name */
+                            it->second->GetTouchscreenSize()));
     }
   }
 
   observer->OnTouchscreenDevicesUpdated(touchscreens);
 }
 
 int EventFactoryEvdev::NextDeviceId() {
   return ++last_device_id_;
 }
 
 }  // namespace ui