Replace scoped_ptr with std::unique_ptr in //ui

ui/events/gesture_detection/gesture_detector.h

Index: ui/events/gesture_detection/gesture_detector.h
diff --git a/ui/events/gesture_detection/gesture_detector.h b/ui/events/gesture_detection/gesture_detector.h
index 9fb699985f2aeb635685017af3c3f256c3b95759..4788be870eb6167a7d00b79c80ab9d81bb53d049 100644
--- a/ui/events/gesture_detection/gesture_detector.h
+++ b/ui/events/gesture_detection/gesture_detector.h
@@ -5,9 +5,10 @@
 #ifndef UI_EVENTS_GESTURE_DETECTION_GESTURE_DETECTOR_H_
 #define UI_EVENTS_GESTURE_DETECTION_GESTURE_DETECTOR_H_
 
+#include <memory>
+
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/events/gesture_detection/gesture_detection_export.h"
 #include "ui/events/gesture_detection/velocity_tracker_state.h"
 
@@ -111,7 +112,7 @@ class GESTURE_DETECTION_EXPORT GestureDetector {
   bool HandleSwipeIfNeeded(const MotionEvent& up, float vx, float vy);
 
   class TimeoutGestureHandler;
-  scoped_ptr<TimeoutGestureHandler> timeout_handler_;
+  std::unique_ptr<TimeoutGestureHandler> timeout_handler_;
   GestureListener* const listener_;
   DoubleTapListener* double_tap_listener_;
 
@@ -133,9 +134,9 @@ class GESTURE_DETECTION_EXPORT GestureDetector {
   bool always_in_bigger_tap_region_;
   bool two_finger_tap_allowed_for_gesture_;
 
-  scoped_ptr<MotionEvent> current_down_event_;
-  scoped_ptr<MotionEvent> previous_up_event_;
-  scoped_ptr<MotionEvent> secondary_pointer_down_event_;
+  std::unique_ptr<MotionEvent> current_down_event_;
+  std::unique_ptr<MotionEvent> previous_up_event_;
+  std::unique_ptr<MotionEvent> secondary_pointer_down_event_;
 
   // True when the user is still touching for the second tap (down, move, and
   // up events). Can only be true if there is a double tap listener attached.