Convert //base to use std::unique_ptr

base/win/enum_variant.h

Index: base/win/enum_variant.h
diff --git a/base/win/enum_variant.h b/base/win/enum_variant.h
index 2caaccded9ff58b2b70fe4903ec0f7bea29973ec..e27afcd93d4e1f482edda794d38549e7eabc5886 100644
--- a/base/win/enum_variant.h
+++ b/base/win/enum_variant.h
@@ -7,7 +7,8 @@
 
 #include <unknwn.h>
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "base/win/iunknown_impl.h"
 
 namespace base {
@@ -41,7 +42,7 @@ class BASE_EXPORT EnumVariant
  private:
   ~EnumVariant() override;
 
-  scoped_ptr<VARIANT[]> items_;
+  std::unique_ptr<VARIANT[]> items_;
   unsigned long count_;
   unsigned long current_index_;
 };