Create stubs for system certificate validation.

net/base/cert_verify_proc.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/cert_verify_proc.h"
+
+#include "build/build_config.h"
+#include "net/base/cert_verify_proc_mac.h"
+#include "net/base/cert_verify_proc_nss.h"
+#include "net/base/cert_verify_proc_openssl.h"
+#include "net/base/cert_verify_proc_win.h"

[wtc, 2012/03/13 22:37:57]

Nit: it seems that these platform-specific headers should
be included inside ifdefs.

+
+namespace net {
+
+// static
+CertVerifyProc* CertVerifyProc::CreateDefault() {
+#if defined(USE_NSS)
+  return new CertVerifyProcNSS();
+#elif defined(USE_OPENSSL)
+  return new CertVerifyProcOpenSSL();
+#elif defined(OS_MACOSX)
+  return new CertVerifyProcMac();
+#elif defined(OS_WIN)
+  return new CertVerifyProcWin();
+#else
+#error Implement certificate verification for your platform
+#endif
+}
+
+CertVerifyProc::CertVerifyProc() {}
+
+CertVerifyProc::~CertVerifyProc() {}
+
+int CertVerifyProc::Verify(X509Certificate* cert,
+                           const std::string& hostname,
+                           int flags,
+                           CRLSet* crl_set,
+                           CertVerifyResult* verify_result) {
+  return VerifyInternal(cert, hostname, flags, crl_set, verify_result);

[wtc, 2012/03/13 22:37:57]

Nit: the purpose of the Verify/VerifyInternal split is not
clear to me.

+}
+
+}  // namespace net