Remove stl_util's deletion function use from ui/.

ui/events/gestures/gesture_recognizer_impl.h

 // Copyright (c) 2012 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 UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
 #define UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 68 matching lines @@
   void AddGestureEventHelper(GestureEventHelper* helper) override;
   void RemoveGestureEventHelper(GestureEventHelper* helper) override;
 
   // Overridden from GestureProviderAuraClient
   void OnGestureEvent(GestureConsumer* raw_input_consumer,
                       GestureEvent* event) override;
 
   // Convenience method to find the GestureEventHelper that can dispatch events
   // to a specific |consumer|.
   GestureEventHelper* FindDispatchHelperForConsumer(GestureConsumer* consumer);
-  std::map<GestureConsumer*, GestureProviderAura*> consumer_gesture_provider_;
+  std::map<GestureConsumer*, std::unique_ptr<GestureProviderAura>>
+      consumer_gesture_provider_;
 
   // |touch_id_target_| maps a touch-id to its target window.
   // touch-ids are removed from |touch_id_target_| on
   // ET_TOUCH_RELEASE and ET_TOUCH_CANCEL.
   TouchIdToConsumerMap touch_id_target_;
 
   std::vector<GestureEventHelper*> helpers_;
 
   DISALLOW_COPY_AND_ASSIGN(GestureRecognizerImpl);
 };
 
 // Provided only for testing:
 EVENTS_EXPORT void SetGestureRecognizerForTesting(
     GestureRecognizer* gesture_recognizer);
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_