Convert chrome/common to std::unique_ptr

chrome/common/safe_browsing/pe_image_reader_win.cc

Index: chrome/common/safe_browsing/pe_image_reader_win.cc
diff --git a/chrome/common/safe_browsing/pe_image_reader_win.cc b/chrome/common/safe_browsing/pe_image_reader_win.cc
index 23ee011defd1a408bdc4a4e47b40b17c88d91e17..c53ab16aa44df66ca14aaffeda1488de11685ba0 100644
--- a/chrome/common/safe_browsing/pe_image_reader_win.cc
+++ b/chrome/common/safe_browsing/pe_image_reader_win.cc
@@ -6,6 +6,8 @@
 
 #include <wintrust.h>
 
+#include <memory>
+
 #include "base/logging.h"
 #include "base/macros.h"
 
@@ -244,7 +246,7 @@ bool PeImageReader::ValidateOptionalHeader() {
     return false;
   }
 
-  scoped_ptr<OptionalHeader> optional_header;
+  std::unique_ptr<OptionalHeader> optional_header;
   if (*optional_header_magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
     optional_header.reset(new OptionalHeaderImpl<IMAGE_OPTIONAL_HEADER32>(
         image_data_ + optional_header_offset));