Port Chromium OS touch noise filtering to Chromium

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

Index: ui/events/ozone/evdev/touch_noise/touch_noise_filter.h
diff --git a/ui/events/ozone/evdev/touch_noise/touch_noise_filter.h b/ui/events/ozone/evdev/touch_noise/touch_noise_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..157584d7a68ad14b504df4ab2e422856741d810c
--- /dev/null
+++ b/ui/events/ozone/evdev/touch_noise/touch_noise_filter.h
@@ -0,0 +1,26 @@
+// 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_FILTER_H_
+#define UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_FILTER_H_
+
+#include <bitset>
+#include <vector>
+
+#include "base/time/time.h"
+#include "ui/events/ozone/evdev/touch_evdev_types.h"
+
+namespace ui {
+
+class TouchNoiseFilter {
+ public:
+  virtual ~TouchNoiseFilter() {}
+  virtual void Filter(const std::vector<InProgressTouchEvdev>& touches,
+                      base::TimeDelta time,
+                      std::bitset<kNumTouchEvdevSlots>* slots_with_noise) = 0;
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_FILTER_H_