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

ui/events/ozone/evdev/tablet_event_converter_evdev.cc

 // 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.
 
 #include "ui/events/ozone/evdev/tablet_event_converter_evdev.h"
 
 #include <errno.h>
 #include <linux/input.h>
 #include <stddef.h>
 
@@ skipping 165 matching lines @@
   }
 
   bool down = input.value;
 
   dispatcher_->DispatchMouseButtonEvent(MouseButtonEventParams(
       input_device_.id, cursor_->GetLocation(), button, down,
       false /* allow_remap */,
       PointerDetails(EventPointerType::POINTER_TYPE_PEN,
                      /* radius_x */ 0.0f, /* radius_y */ 0.0f, pressure_,
                      tilt_x_, tilt_y_),
-      TimeDeltaFromInputEvent(input)));
+      TimeTicksFromInputEvent(input)));
 }
 
 void TabletEventConverterEvdev::FlushEvents(const input_event& input) {
   if (!cursor_)
     return;
 
   // Prevent propagation of invalid data on stylus lift off
   if (stylus_ == 0) {
     abs_value_dirty_ = false;
     return;
   }
 
   if (!abs_value_dirty_)
     return;
 
   UpdateCursor();
 
   dispatcher_->DispatchMouseMoveEvent(MouseMoveEventParams(
       input_device_.id, cursor_->GetLocation(),
       PointerDetails(EventPointerType::POINTER_TYPE_PEN,
                      /* radius_x */ 0.0f, /* radius_y */ 0.0f, pressure_,
                      tilt_x_, tilt_y_),
-      TimeDeltaFromInputEvent(input)));
+      TimeTicksFromInputEvent(input)));
 
   abs_value_dirty_ = false;
 }
 
 }  // namespace ui