Replace scoped_ptr with std::unique_ptr in //ui

ui/events/blink/blink_event_util.cc

Index: ui/events/blink/blink_event_util.cc
diff --git a/ui/events/blink/blink_event_util.cc b/ui/events/blink/blink_event_util.cc
index 135c58e9a60a7a852f2a61c10e26cc14307eac8b..436d2d85df6d774e076fe6dcedeaf6ed31fcf3be 100644
--- a/ui/events/blink/blink_event_util.cc
+++ b/ui/events/blink/blink_event_util.cc
@@ -339,10 +339,10 @@ WebGestureEvent CreateWebGestureEventFromGestureEventData(
                                gfx::PointF(data.raw_x, data.raw_y), data.flags);
 }
 
-scoped_ptr<blink::WebInputEvent> ScaleWebInputEvent(
+std::unique_ptr<blink::WebInputEvent> ScaleWebInputEvent(
     const blink::WebInputEvent& event,
     float scale) {
-  scoped_ptr<blink::WebInputEvent> scaled_event;
+  std::unique_ptr<blink::WebInputEvent> scaled_event;
   if (scale == 1.f)
     return scaled_event;
   if (event.type == blink::WebMouseEvent::MouseWheel) {