Palette tool laser prototype.

ash/common/system/chromeos/palette/tools/laser_pointer_points_test_api.h

+// 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.
+
+#ifndef ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_POINTS_TESTAPI_H_
+#define ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_POINTS_TESTAPI_H_
+
+#include <memory>
+
+#include "base/time/time.h"
+
+namespace ash {
+
+class LaserPointerPoints;
+
+// An api for testing the laser_pointer_points class.
+class LaserPointerPointsTestApi {
+ public:
+  LaserPointerPointsTestApi(std::unique_ptr<LaserPointerPoints> instance);
+  ~LaserPointerPointsTestApi();
+
+  int GetNumberOfPoints() const;
+  void MoveForwardInTime(const base::TimeDelta& delta);

[jdufault, 2016/08/24 00:20:57]

Add a comment to this function saying it moves existing points back in time by
|delta| and adds a new point at (0, 0).

[sammiequon, 2016/08/24 17:30:19]

Done.

+
+ private:
+  // The time the new points are added.
+  base::Time new_point_time_;
+  std::unique_ptr<LaserPointerPoints> instance_;
+
+  DISALLOW_COPY_AND_ASSIGN(LaserPointerPointsTestApi);
+};
+}  // namespace ash
+
+#endif  // ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_POINTS_TESTAPI_H_