Split ui/display types into separate module and have Ozone depend on it

ui/display/chromeos/x11/native_display_delegate_x11.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/display/chromeos/x11/native_display_delegate_x11.h"
 
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
 #include <X11/extensions/dpms.h>
 #include <X11/extensions/Xrandr.h>
 #include <X11/extensions/XInput2.h>
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_pump_x11.h"
 #include "base/stl_util.h"
-#include "ui/display/chromeos/native_display_observer.h"
 #include "ui/display/chromeos/x11/display_mode_x11.h"
 #include "ui/display/chromeos/x11/display_snapshot_x11.h"
 #include "ui/display/chromeos/x11/display_util_x11.h"
 #include "ui/display/chromeos/x11/native_display_event_dispatcher_x11.h"
+#include "ui/display/types/chromeos/native_display_observer.h"
 #include "ui/display/x11/edid_parser_x11.h"
 #include "ui/events/platform/platform_event_source.h"
 #include "ui/gfx/x/x11_error_tracker.h"
 
 namespace ui {
 
 namespace {
 
 // DPI measurements.
 const float kMmInInch = 25.4;
@@ skipping 615 matching lines @@
 
 void NativeDisplayDelegateX11::AddObserver(NativeDisplayObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void NativeDisplayDelegateX11::RemoveObserver(NativeDisplayObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace ui