Replace scoped_ptr with std::unique_ptr in //ui

ui/base/dragdrop/os_exchange_data.h

Index: ui/base/dragdrop/os_exchange_data.h
diff --git a/ui/base/dragdrop/os_exchange_data.h b/ui/base/dragdrop/os_exchange_data.h
index 5917c8426f8ce95c1c562c39ad6a1dfe8b6bae35..5c237587c16216f35ba33894f1e69bb463c3d43f 100644
--- a/ui/base/dragdrop/os_exchange_data.h
+++ b/ui/base/dragdrop/os_exchange_data.h
@@ -5,18 +5,18 @@
 #ifndef UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_H_
 #define UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_H_
 
-#include "build/build_config.h"
-
+#include <memory>
 #include <set>
 #include <string>
 
+#include "build/build_config.h"
+
 #if defined(OS_WIN)
 #include <objidl.h>
 #endif
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/dragdrop/download_file_interface.h"
 #include "ui/base/ui_base_export.h"
@@ -229,7 +229,7 @@ class UI_BASE_EXPORT OSExchangeData {
 
  private:
   // Provides the actual data.
-  scoped_ptr<Provider> provider_;
+  std::unique_ptr<Provider> provider_;
 
   DISALLOW_COPY_AND_ASSIGN(OSExchangeData);
 };