Change UTF8ToUTF16 to accept const StringPiece&.

net/tools/dnssec_chain_verify/dnssec_chain_verify.cc

 // Copyright (c) 2010 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 <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 
 #include "base/at_exit.h"
 #include "net/base/dns_util.h"
 #include "net/base/dnssec_chain_verifier.h"
 
 static int usage(const char* argv0) {
   fprintf(stderr, "Usage: %s [--ignore-timestamps] <target domain> "
                   "<input file>\n", argv0);
   return 1;
 }
@@ skipping 82 matching lines @@
   }
 
   if (err != net::DNSSECChainVerifier::OK) {
     fprintf(stderr, "Chain error: %s (%d)\n", err_str, (int) err);
     return 1;
   }
 
   fprintf(stderr, "Chain good: rrtype:%d\n", verifier.rrtype());
   return 0;
 }