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;
   }
 }
 
+base::string16 GuidToSquid(const base::string16& guid) {
+  base::string16 squid;
+  squid.reserve(32);
+  auto input = guid.begin();
+  auto output = std::back_inserter(squid);
+
+  // Reverse-copy relevant characters, skipping separators.
+  std::reverse_copy(input + 0, input + 8, output);
+  std::reverse_copy(input + 9, input + 13, output);
+  std::reverse_copy(input + 14, input + 18, output);
+  std::reverse_copy(input + 19, input + 21, output);
+  std::reverse_copy(input + 21, input + 23, output);
+  std::reverse_copy(input + 24, input + 26, output);
+  std::reverse_copy(input + 26, input + 28, output);
+  std::reverse_copy(input + 28, input + 30, output);
+  std::reverse_copy(input + 30, input + 32, output);
+  std::reverse_copy(input + 32, input + 34, output);
+  std::reverse_copy(input + 34, input + 36, output);
+  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