Replace scoped_ptr with std::unique_ptr in //ui

ui/events/gesture_detection/motion_event.h

Index: ui/events/gesture_detection/motion_event.h
diff --git a/ui/events/gesture_detection/motion_event.h b/ui/events/gesture_detection/motion_event.h
index 7ee834e3f87d654fb486db5a0448655e211fcce2..9047d1a927a51666244a5b06937a53b7583025f4 100644
--- a/ui/events/gesture_detection/motion_event.h
+++ b/ui/events/gesture_detection/motion_event.h
@@ -8,7 +8,8 @@
 #include <stddef.h>
 #include <stdint.h>
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "base/time/time.h"
 #include "ui/events/gesture_detection/gesture_detection_export.h"
 
@@ -117,8 +118,8 @@ class GESTURE_DETECTION_EXPORT MotionEvent {
   // They guarantee only that the returned type will reflect the same
   // data exposed by the MotionEvent interface; no guarantees are made that the
   // underlying implementation is identical to the source implementation.
-  scoped_ptr<MotionEvent> Clone() const;
-  scoped_ptr<MotionEvent> Cancel() const;
+  std::unique_ptr<MotionEvent> Clone() const;
+  std::unique_ptr<MotionEvent> Cancel() const;
 };
 
 }  // namespace ui