ui: Cleanup class/struct forward declarations

ui/events/ozone/evdev/touch_event_converter_evdev.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_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_
 #define UI_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <bitset>
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/message_loop/message_pump_libevent.h"
 #include "ui/events/event_constants.h"
 #include "ui/events/ozone/evdev/event_converter_evdev.h"
 #include "ui/events/ozone/evdev/event_device_info.h"
 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
 #include "ui/events/ozone/evdev/touch_evdev_debug_buffer.h"
 
-namespace gfx {
-class PointF;
-}
-
 namespace ui {
 
 class DeviceEventDispatcherEvdev;
-class TouchEvent;
 class TouchNoiseFinder;
 struct InProgressTouchEvdev;
-struct PointerDetails;
 
 class EVENTS_OZONE_EVDEV_EXPORT TouchEventConverterEvdev
     : public EventConverterEvdev {
  public:
   TouchEventConverterEvdev(int fd,
                            base::FilePath path,
                            int id,
                            const EventDeviceInfo& devinfo,
                            DeviceEventDispatcherEvdev* dispatcher);
   ~TouchEventConverterEvdev() override;
@@ skipping 108 matching lines @@
 
   // Callback to enable/disable palm suppression.
   base::Callback<void(bool)> enable_palm_suppression_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchEventConverterEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_