Add options to write version number to registry.

chrome/installer/setup/setup_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // This file declares util functions for setup project.
 
 #include "chrome/installer/setup/setup_util.h"
 
 #include <windows.h>
 
@@ skipping 611 matching lines @@
       LOG(ERROR) << "Failed to delete value " << name << " in key " << path;
       // Skip over this value on subsequent iterations.
       to_skip.insert(name);
       ++index;
       continue;
     }
     did_delete = true;
   }
 }
 
+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;
   if (!::OpenProcessToken(::GetCurrentProcess(),
                           TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
                           &temp_handle)) {
     return;
   }
   token_.Set(temp_handle);
 
@@ skipping 22 matching lines @@
 }
 
 ScopedTokenPrivilege::~ScopedTokenPrivilege() {
   if (is_enabled_ && previous_privileges_.PrivilegeCount != 0) {
     ::AdjustTokenPrivileges(token_.Get(), FALSE, &previous_privileges_,
                             sizeof(TOKEN_PRIVILEGES), NULL, NULL);
   }
 }
 
 }  // namespace installer