Port Chromium OS touch noise filtering to Chromium

ui/events/ozone/evdev/touch_noise/touch_noise_remover.h

+// Copyright 2015 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_NOISE_TOUCH_NOISE_REMOVER_H_
+#define UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_REMOVER_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/time/time.h"
+#include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
+#include "ui/events/ozone/evdev/touch_noise/touch_noise_filter.h"
+
+namespace ui {
+struct TouchEventParams;
+
+// Removes touches which are likely to be touch noise.
+class EVENTS_OZONE_EVDEV_EXPORT TouchNoiseRemover {
+ public:
+  TouchNoiseRemover();
+  ~TouchNoiseRemover();
+
+  void RemoveNoise(std::vector<ui::TouchEventParams>* touches,
+                   base::TimeDelta timestamp);
+
+ private:
+  TouchNoiseFilter::Frame frame_;
+
+  std::vector<TouchNoiseFilter*> filters_;
+
+  DISALLOW_COPY_AND_ASSIGN(TouchNoiseRemover);
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_REMOVER_H_