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

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

Index: ui/events/ozone/evdev/touch_noise/far_apart_taps_touch_noise_filter.h
diff --git a/ui/events/ozone/evdev/touch_noise/far_apart_taps_touch_noise_filter.h b/ui/events/ozone/evdev/touch_noise/far_apart_taps_touch_noise_filter.h
index d21d99dd268b347a4e2ffb8046e6f34bc98e8237..06a84188947ec098df5394ed437c25ae68829278 100644
--- a/ui/events/ozone/evdev/touch_noise/far_apart_taps_touch_noise_filter.h
+++ b/ui/events/ozone/evdev/touch_noise/far_apart_taps_touch_noise_filter.h
@@ -18,19 +18,19 @@ class FarApartTapsTouchNoiseFilter : public TouchNoiseFilter {
 
   // TouchNoiseFilter:
   void Filter(const std::vector<InProgressTouchEvdev>& touches,
-              base::TimeDelta time,
+              base::TimeTicks time,
               std::bitset<kNumTouchEvdevSlots>* slots_with_noise) override;
 
  private:
   struct Tap {
     Tap() : x(0), y(0) {}
-    Tap(base::TimeDelta start, int x, int y)
+    Tap(base::TimeTicks start, int x, int y)
         : start(start), x(x), y(y) {}
 
-    bool is_valid() const { return !start.is_zero(); }
-    void Invalidate() { start = base::TimeDelta(); }
+    bool is_valid() const { return start != base::TimeTicks(); }

[miu, 2016/05/16 20:05:35]

!start.is_null()

[majidvp, 2016/05/21 01:38:00]

Done.

+    void Invalidate() { start = base::TimeTicks(); }
 
-    base::TimeDelta start;
+    base::TimeTicks start;
     float x;
     float y;
   };