ash: Add basic prediction code to the laser pointer.

ash/laser/laser_pointer_points_test_api.cc

 // Copyright 2016 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 "ash/laser/laser_pointer_points_test_api.h"
 
 namespace ash {
 
 LaserPointerPointsTestApi::LaserPointerPointsTestApi(
     LaserPointerPoints* instance)
     : instance_(instance) {}
 
 LaserPointerPointsTestApi::~LaserPointerPointsTestApi() {}
 
 int LaserPointerPointsTestApi::GetNumberOfPoints() const {
   return instance_->GetNumberOfPoints();
 }
 
 void LaserPointerPointsTestApi::MoveForwardInTime(
     const base::TimeDelta& delta) {
-  base::Time new_time = instance_->collection_latest_time_ + delta;
+  base::TimeTicks new_time = instance_->collection_latest_time_ + delta;
   instance_->MoveForwardToTime(new_time);
 
   LaserPointerPoints::LaserPoint new_point;
   instance_->points_.push_back(new_point);
 }
 
 LaserPointerPoints::LaserPoint LaserPointerPointsTestApi::GetPointAtIndex(
     int index) {
   DCHECK(index >= 0 && index < GetNumberOfPoints());
   return instance_->points_[index];
 }
 
 }  // namespace ash