Change ui::Event::time_stamp from TimeDelta to TimeTicks

ui/events/ozone/evdev/touch_noise/touch_noise_finder.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_FINDER_H_
 #define UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_FINDER_H_
 
 #include <stddef.h>
 
 #include <bitset>
@@ skipping 10 matching lines @@
 // Finds touches which are likely touch noise.
 class EVENTS_OZONE_EVDEV_EXPORT TouchNoiseFinder {
  public:
   TouchNoiseFinder();
   ~TouchNoiseFinder();
 
   // Updates which ABS_MT_SLOTs are noise. |touches| should contain all of the
   // in-progress touches at |time| (including noisy touches).
   // |touches| should have at most one entry per ABS_MT_SLOT.
   void HandleTouches(const std::vector<InProgressTouchEvdev>& touches,
-                     base::TimeDelta time);
+                     base::TimeTicks time);
 
   // Returns whether the in-progress touch at ABS_MT_SLOT |slot| is noise.
   bool SlotHasNoise(size_t slot) const;
 
  private:
   // Records how frequently noisy touches occur to UMA.
-  void RecordUMA(bool had_noise, base::TimeDelta time);
+  void RecordUMA(bool had_noise, base::TimeTicks time);
 
   friend class TouchEventConverterEvdevTouchNoiseTest;
 
   // The slots which are noise.
   std::bitset<kNumTouchEvdevSlots> slots_with_noise_;
 
   // The time of the previous noise occurence in any of the slots.
-  base::TimeDelta last_noise_time_;
+  base::TimeTicks last_noise_time_;
 
   std::vector<TouchNoiseFilter*> filters_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchNoiseFinder);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_FINDER_H_