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

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>
 
@@ skipping 55 matching lines @@
   void ProcessKey(const input_event& input);
   void ProcessAbs(const input_event& input);
   void ProcessSyn(const input_event& input);
 
   // Returns an EventType to dispatch for |touch|. Returns ET_UNKNOWN if an
   // event should not be dispatched.
   EventType GetEventTypeForTouch(const InProgressTouchEvdev& touch);
 
   void ReportEvent(const InProgressTouchEvdev& event,
                    EventType event_type,
-                   const base::TimeDelta& delta);
-  void ReportEvents(base::TimeDelta delta);
+                   base::TimeTicks timestamp);
+  void ReportEvents(base::TimeTicks timestamp);
 
   void UpdateTrackingId(int slot, int tracking_id);
   void ReleaseTouches();
 
   // Normalize pressure value to [0, 1].
   float ScalePressure(int32_t value);
 
   int NextTrackingId();
 
   // Dispatcher for events.
@@ skipping 40 matching lines @@
 
   // Records the recent touch events. It is used to fill the feedback reports
   TouchEventLogEvdev touch_evdev_debug_buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchEventConverterEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_