Small fixes to allow unit tests to compile with gcc 4.7.x (tested with gcc 4.7.2)

net/base/x509_util_nss_unittest.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 "net/base/x509_util.h"
 #include "net/base/x509_util_nss.h"
 
 #include <cert.h>
 #include <secoid.h>
 
@@ skipping 24 matching lines @@
 void VerifyCertificateSignature(const std::string& der_cert,
                                 const std::vector<uint8>& der_spki) {
   crypto::ScopedPLArenaPool arena(PORT_NewArena(DER_DEFAULT_CHUNKSIZE));
 
   CERTSignedData sd;
   memset(&sd, 0, sizeof(sd));
 
   SECItem der_cert_item = {
     siDERCertBuffer,
     reinterpret_cast<unsigned char*>(const_cast<char*>(der_cert.data())),
-    der_cert.size()
+    static_cast<unsigned int>(der_cert.size())
   };
   SECStatus rv = SEC_ASN1DecodeItem(arena.get(), &sd,
                                     SEC_ASN1_GET(CERT_SignedDataTemplate),
                                     &der_cert_item);
   ASSERT_EQ(SECSuccess, rv);
 
   // The CERTSignedData.signatureAlgorithm is decoded, but SignatureVerifier
   // wants the DER encoded form, so re-encode it again.
   SECItem* signature_algorithm = SEC_ASN1EncodeItem(
       arena.get(),
@@ skipping 22 matching lines @@
 
 void VerifyDomainBoundCert(const std::string& domain,
                            const std::string& der_cert) {
   // Origin Bound Cert OID.
   static const char oid_string[] = "1.3.6.1.4.1.11129.2.1.6";
 
   // Create object neccessary for extension lookup call.
   SECItem extension_object = {
     siAsciiString,
     (unsigned char*)domain.data(),
-    domain.size()
+    static_cast<unsigned int>(domain.size())
   };
 
   // IA5Encode and arena allocate SECItem.
   PLArenaPool* arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
   SECItem* expected = SEC_ASN1EncodeItem(arena,
                                          NULL,
                                          &extension_object,
                                          SEC_ASN1_GET(SEC_IA5StringTemplate));
 
   ASSERT_NE(static_cast<SECItem*>(NULL), expected);
@@ skipping 63 matching lines @@
 
 #if !defined(OS_WIN) && !defined(OS_MACOSX)
   // signature_verifier_win and signature_verifier_mac can't handle EC certs.
   std::vector<uint8> spki;
   ASSERT_TRUE(private_key->ExportPublicKey(&spki));
   VerifyCertificateSignature(der_cert, spki);
 #endif
 }
 
 }  // namespace net