Add cloud_print to the GN build.

cloud_print/service/win/local_security_policy.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 "cloud_print/service/win/local_security_policy.h"
 
 #include <atlsecurity.h>
 #include <ntsecapi.h>
 #include <windows.h>
 
@@ skipping 91 matching lines @@
                                        const base::string16& privilage) {
   DCHECK(policy_);
   ATL::CSid user_sid;
   if (!user_sid.LoadAccount(username.c_str())) {
     LOG(ERROR) << "Unable to load Sid for" << username;
     return false;
   }
   LSA_UNICODE_STRING privilege_string;
   base::string16 privilage_copy(privilage);
   privilege_string.Buffer = &privilage_copy[0];
-  privilege_string.Length = wcslen(privilege_string.Buffer) *
-                            sizeof(privilege_string.Buffer[0]);
+  privilege_string.Length = static_cast<USHORT>(
+      wcslen(privilege_string.Buffer) * sizeof(privilege_string.Buffer[0]));
   privilege_string.MaximumLength = privilege_string.Length +
                                    sizeof(privilege_string.Buffer[0]);
   return STATUS_SUCCESS ==
       ::LsaAddAccountRights(policy_, const_cast<SID*>(user_sid.GetPSID()),
                             &privilege_string, 1);
 }