Convert //base to use std::unique_ptr

base/i18n/message_formatter.h

Index: base/i18n/message_formatter.h
diff --git a/base/i18n/message_formatter.h b/base/i18n/message_formatter.h
index 4a5b92f2aabea03e83dc719b383072893b3a8b9a..439402380d2d382b8917c7bcc4b97b54308d15ca 100644
--- a/base/i18n/message_formatter.h
+++ b/base/i18n/message_formatter.h
@@ -6,11 +6,12 @@
 #define BASE_I18N_MESSAGE_FORMATTER_H_
 
 #include <stdint.h>
+
+#include <memory>
 #include <string>
 
 #include "base/i18n/base_i18n_export.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_piece.h"
 #include "third_party/icu/source/common/unicode/uversion.h"
@@ -46,7 +47,7 @@ class BASE_I18N_EXPORT MessageArg {
   MessageArg();
   // Tests if this argument has a value, and if so increments *count.
   bool has_value(int* count) const;
-  scoped_ptr<icu::Formattable> formattable;
+  std::unique_ptr<icu::Formattable> formattable;
   DISALLOW_COPY_AND_ASSIGN(MessageArg);
 };