Correctly detect Windows XP Pro x64 and Windows 2003 as not supporting elevation.

remoting/host/win/launch_process_with_token.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 "remoting/host/win/launch_process_with_token.h"
 
 #include <windows.h>
 #include <sddl.h>
 #include <winternl.h>
 
@@ skipping 362 matching lines @@
 // Requests the execution server to create a process in the specified session
 // using the default (i.e. Winlogon) token. This routine relies on undocumented
 // OS functionality and will likely not work on anything but XP or W2K3.
 bool CreateRemoteSessionProcess(
     uint32 session_id,
     const FilePath::StringType& application_name,
     const CommandLine::StringType& command_line,
     DWORD creation_flags,
     PROCESS_INFORMATION* process_information_out)
 {
-  DCHECK(base::win::GetVersion() == base::win::VERSION_XP);
+  DCHECK_LT(base::win::GetVersion(), base::win::VERSION_VISTA);
 
   base::win::ScopedHandle pipe;
   if (!ConnectToExecutionServer(session_id, &pipe))
     return false;
 
   if (!SendCreateProcessRequest(pipe, application_name, command_line,
                                 creation_flags)) {
     return false;
   }
 
@@ skipping 191 matching lines @@
                                     process_info.Receive());
 
   // CreateProcessAsUser will fail on XP and W2K3 with ERROR_PIPE_NOT_CONNECTED
   // if the user hasn't logged to the target session yet. In such a case
   // we try to talk to the execution server directly emulating what
   // the undocumented and not-exported advapi32!CreateRemoteSessionProcessW()
   // function does. The created process will run under Winlogon'a token instead
   // of |user_token|. Since Winlogon runs as SYSTEM, this suits our needs.
   if (!result &&
       GetLastError() == ERROR_PIPE_NOT_CONNECTED &&
-      base::win::GetVersion() == base::win::VERSION_XP) {
+      base::win::GetVersion() < base::win::VERSION_VISTA) {
     DWORD session_id;
     DWORD return_length;
     result = GetTokenInformation(user_token,
                                  TokenSessionId,
                                  &session_id,
                                  sizeof(session_id),
                                  &return_length);
     if (result && session_id != 0) {
       result = CreateRemoteSessionProcess(session_id,
                                           application_name,
@@ skipping 13 matching lines @@
     return false;
   }
 
   CHECK(process_info.IsValid());
   process_out->Set(process_info.TakeProcessHandle());
   thread_out->Set(process_info.TakeThreadHandle());
   return true;
 }
 
 } // namespace remoting