Replace scoped_ptr with std::unique_ptr in //ui

ui/events/platform/platform_event_source.h

Index: ui/events/platform/platform_event_source.h
diff --git a/ui/events/platform/platform_event_source.h b/ui/events/platform/platform_event_source.h
index e6b569e5d1330112808ddda8b8ab87c270f28fc3..4cfe5b2441ff17aa49890db2976041b4990f0837 100644
--- a/ui/events/platform/platform_event_source.h
+++ b/ui/events/platform/platform_event_source.h
@@ -8,11 +8,11 @@
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 #include <vector>
 
 #include "base/auto_reset.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "ui/events/events_export.h"
 #include "ui/events/platform/platform_event_types.h"
@@ -54,7 +54,7 @@ class EVENTS_EXPORT PlatformEventSource {
   // dispatcher. When this handler is destroyed, it removes the overridden
   // dispatcher, and restores the previous override-dispatcher (or NULL if there
   // wasn't any).
-  scoped_ptr<ScopedEventDispatcher> OverrideDispatcher(
+  std::unique_ptr<ScopedEventDispatcher> OverrideDispatcher(
       PlatformEventDispatcher* dispatcher);
 
   // Called to indicate that the source should stop dispatching the current
@@ -65,7 +65,7 @@ class EVENTS_EXPORT PlatformEventSource {
   void AddPlatformEventObserver(PlatformEventObserver* observer);
   void RemovePlatformEventObserver(PlatformEventObserver* observer);
 
-  static scoped_ptr<PlatformEventSource> CreateDefault();
+  static std::unique_ptr<PlatformEventSource> CreateDefault();
 
  protected:
   PlatformEventSource();