Move all event related devices from ui/events/ to ui/events/devices/

ui/events/devices/input_device_event_observer.h

Index: ui/events/devices/input_device_event_observer.h
diff --git a/ui/events/input_device_event_observer.h b/ui/events/devices/input_device_event_observer.h
similarity index 61%
rename from ui/events/input_device_event_observer.h
rename to ui/events/devices/input_device_event_observer.h
index 6b751e1fdf30375a33fc4e2b556db72a5726a758..6cee8e87c0483acb15d351652040cce6de827f17 100644
--- a/ui/events/input_device_event_observer.h
+++ b/ui/events/devices/input_device_event_observer.h
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_EVENTS_INPUT_DEVICE_EVENT_OBSERVER_H_
-#define UI_EVENTS_INPUT_DEVICE_EVENT_OBSERVER_H_
+#ifndef UI_EVENTS_DEVICES_INPUT_DEVICE_EVENT_OBSERVER_H_
+#define UI_EVENTS_DEVICES_INPUT_DEVICE_EVENT_OBSERVER_H_
 
-#include "ui/events/events_base_export.h"
+#include "ui/events/devices/events_devices_export.h"
 
 namespace ui {
 
 // DeviceDataManager observer used to announce input hotplug events.
-class EVENTS_BASE_EXPORT InputDeviceEventObserver {
+class EVENTS_DEVICES_EXPORT InputDeviceEventObserver {
  public:
   virtual ~InputDeviceEventObserver() {}
 
@@ -20,4 +20,4 @@ class EVENTS_BASE_EXPORT InputDeviceEventObserver {
 
 }  // namespace ui
 
-#endif  // UI_EVENTS_INPUT_DEVICE_EVENT_OBSERVER_H_
+#endif  // UI_EVENTS_DEVICES_INPUT_DEVICE_EVENT_OBSERVER_H_