Split //ui/display and create //ui/display/manager.

ui/display/chromeos/x11/native_display_event_dispatcher_x11.h

-// 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_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_
-#define UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_
-
-#include <stdint.h>
-
-#include "base/macros.h"
-#include "base/time/tick_clock.h"
-#include "base/time/time.h"
-#include "ui/display/chromeos/x11/native_display_delegate_x11.h"
-#include "ui/events/platform/platform_event_dispatcher.h"
-
-namespace ui {
-
-// The implementation is interested in the cases of RRNotify events which
-// correspond to output add/remove events. Note that Output add/remove events
-// are sent in response to our own reconfiguration operations so spurious events
-// are common. Spurious events will have no effect.
-class DISPLAY_EXPORT NativeDisplayEventDispatcherX11
-    : public ui::PlatformEventDispatcher {
- public:
-  NativeDisplayEventDispatcherX11(
-      NativeDisplayDelegateX11::HelperDelegate* delegate,
-      int xrandr_event_base);
-  ~NativeDisplayEventDispatcherX11() override;
-
-  // ui::PlatformEventDispatcher:
-  bool CanDispatchEvent(const PlatformEvent& event) override;
-  uint32_t DispatchEvent(const PlatformEvent& event) override;
-
-  void SetTickClockForTest(std::unique_ptr<base::TickClock> tick_clock);
-
-  // How long the cached output is valid after startup.
-  static const int kUseCacheAfterStartupMs;
-
- private:
-  NativeDisplayDelegateX11::HelperDelegate* delegate_;  // Not owned.
-
-  // The base of the event numbers used to represent XRandr events used in
-  // decoding events regarding output add/remove.
-  int xrandr_event_base_;
-
-  base::TimeTicks startup_time_;
-
-  std::unique_ptr<base::TickClock> tick_clock_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeDisplayEventDispatcherX11);
-};
-
-}  // namespace ui
-
-#endif  // UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_