Parental controls only need to be Win7.

base/win/metro.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.
 
 #include "base/win/metro.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/windows_version.h"
@@ skipping 56 matching lines @@
 }
 
 wchar_t* LocalAllocAndCopyString(const string16& src) {
   size_t dest_size = (src.length() + 1) * sizeof(wchar_t);
   wchar_t* dest = reinterpret_cast<wchar_t*>(LocalAlloc(LPTR, dest_size));
   base::wcslcpy(dest, src.c_str(), dest_size);
   return dest;
 }
 
 bool IsParentalControlActivityLoggingOn() {
-  // Query this info on Windows Vista and above.
-  if (base::win::GetVersion() < base::win::VERSION_VISTA)
+  // Query this info on Windows 7 and above.

[grt (UTC plus 2), 2014/10/23 22:25:39]

please update the comment in chrome/browser/prefs/incognito_mode_prefs.cc as
well.

while you're at it, how about moving it out of this metro file?

+  if (base::win::GetVersion() < base::win::VERSION_WIN7)
     return false;
 
   static bool parental_control_logging_required = false;
   static bool parental_control_status_determined = false;
 
   if (parental_control_status_determined)
     return parental_control_logging_required;
 
   parental_control_status_determined = true;
 
@@ skipping 47 matching lines @@
         reinterpret_cast<GetInitialSearchString>(
             ::GetProcAddress(metro, "GetInitialSearchString"));
     DCHECK(initial_search_string);
     *params = initial_search_string();
   }
   return launch_type;
 }
 
 }  // namespace win
 }  // namespace base