Replace scoped_ptr with std::unique_ptr in //ui

ui/events/event_target.h

Index: ui/events/event_target.h
diff --git a/ui/events/event_target.h b/ui/events/event_target.h
index e68c27730f54fa6137dc1522c2fa0339f954aace..0d7328637ac1f8f2334a6babe0083ab0fefa8021 100644
--- a/ui/events/event_target.h
+++ b/ui/events/event_target.h
@@ -5,11 +5,11 @@
 #ifndef UI_EVENTS_EVENT_TARGET_H_
 #define UI_EVENTS_EVENT_TARGET_H_
 
+#include <memory>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/events/event_handler.h"
 #include "ui/events/events_export.h"
 
@@ -47,7 +47,7 @@ class EVENTS_EXPORT EventTarget {
 
   // Returns an iterator an EventTargeter can use to iterate over the list of
   // child EventTargets.
-  virtual scoped_ptr<EventTargetIterator> GetChildIterator() const = 0;
+  virtual std::unique_ptr<EventTargetIterator> GetChildIterator() const = 0;
 
   // Returns the EventTargeter that should be used to find the target for an
   // event in the subtree rooted at this EventTarget.