Add options to write version number to registry.

chrome/installer/setup/setup_util.cc

Index: chrome/installer/setup/setup_util.cc
diff --git a/chrome/installer/setup/setup_util.cc b/chrome/installer/setup/setup_util.cc
index af474401c9709d9dbd29faca40c870ee59937a4a..bac1e5514e81afd449fff74eb5708c3ca754beb4 100644
--- a/chrome/installer/setup/setup_util.cc
+++ b/chrome/installer/setup/setup_util.cc
@@ -629,6 +629,24 @@ void DeleteRegistryKeyPartial(
   }
 }
 
+std::string GuidToSquid(const std::string& guid) {

[grt (UTC plus 2), 2015/09/11 18:14:26]

can you get rid of the extra copy by using an output iterator?

#include <iterator>

{
  std::string squid;
  squid.reserve(32);
  auto iter = squid.begin()
  auto output = std::back_inserter(squid);
  std::reverse_copy(iter + 0, iter + 8, output);
  // Skip over separator
  std::reverse_copy(iter + 9, iter + 13, output);
  ...
  return squid;
}

[bcwhite, 2015/09/11 19:24:45]

Done.

+  std::string squid = guid.substr(0, 8) + guid.substr(9, 4) +
+      guid.substr(14, 4) + guid.substr(19, 4) + guid.substr(24, 12);
+  std::string::iterator iter = squid.begin();
+  std::reverse(iter + 0, iter + 8);
+  std::reverse(iter + 8, iter + 12);
+  std::reverse(iter + 12, iter + 16);
+  std::reverse(iter + 16, iter + 18);
+  std::reverse(iter + 18, iter + 20);
+  std::reverse(iter + 20, iter + 22);
+  std::reverse(iter + 22, iter + 24);
+  std::reverse(iter + 24, iter + 26);
+  std::reverse(iter + 26, iter + 28);
+  std::reverse(iter + 28, iter + 30);
+  std::reverse(iter + 30, iter + 32);
+  return squid;
+}
+
 ScopedTokenPrivilege::ScopedTokenPrivilege(const wchar_t* privilege_name)
     : is_enabled_(false) {
   HANDLE temp_handle;