Replace unique_ptr.reset(other_unique_ptr.release()) with std::move() in ash/

ash/test/shelf_button_pressed_metric_tracker_test_api.cc

Index: ash/test/shelf_button_pressed_metric_tracker_test_api.cc
diff --git a/ash/test/shelf_button_pressed_metric_tracker_test_api.cc b/ash/test/shelf_button_pressed_metric_tracker_test_api.cc
index 85afeb93f486d97994978ad0fb09e96c0f7ba6a2..6deddd6509e009588760aabbcf605f4a14f35650 100644
--- a/ash/test/shelf_button_pressed_metric_tracker_test_api.cc
+++ b/ash/test/shelf_button_pressed_metric_tracker_test_api.cc
@@ -19,7 +19,7 @@ ShelfButtonPressedMetricTrackerTestAPI::
 
 void ShelfButtonPressedMetricTrackerTestAPI::SetTickClock(
     std::unique_ptr<base::TickClock> tick_clock) {
-  shelf_button_pressed_metric_tracker_->tick_clock_.reset(tick_clock.release());
+  shelf_button_pressed_metric_tracker_->tick_clock_ = std::move(tick_clock);
 }
 
 }  // namespace test