Continue with the FreeBSD port - this version builds and links, though...

net/base/x509_certificate.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef NET_BASE_X509_CERTIFICATE_H_
 #define NET_BASE_X509_CERTIFICATE_H_
 
 #include <string.h>
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/ref_counted.h"
 #include "base/singleton.h"
 #include "base/time.h"
 #include "testing/gtest/include/gtest/gtest_prod.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <wincrypt.h>
 #elif defined(OS_MACOSX)
 #include <Security/Security.h>
-#elif defined(OS_LINUX)
+#elif defined(USE_NSS)
 // Forward declaration; real one in <cert.h>
 struct CERTCertificateStr;
 #endif
 
 class Pickle;
 
 namespace net {
 
 class CertVerifyResult;
 
@@ skipping 22 matching lines @@
     bool operator() (X509Certificate* lhs,  X509Certificate* rhs) const;
   };
 
   // A handle to the certificate object in the underlying crypto library.
   // We assume that OSCertHandle is a pointer type on all platforms and
   // NULL is an invalid OSCertHandle.
 #if defined(OS_WIN)
   typedef PCCERT_CONTEXT OSCertHandle;
 #elif defined(OS_MACOSX)
   typedef SecCertificateRef OSCertHandle;
-#elif defined(OS_LINUX)
+#elif defined(USE_NSS)
   typedef struct CERTCertificateStr* OSCertHandle;
 #else
   // TODO(ericroman): not implemented
   typedef void* OSCertHandle;
 #endif
 
   // Principal represent an X.509 principal.
   struct Principal {
     Principal() { }
     explicit Principal(const std::string& name) : common_name(name) { }
@@ skipping 234 matching lines @@
 
   // Where the certificate comes from.
   Source source_;
 
   DISALLOW_COPY_AND_ASSIGN(X509Certificate);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_X509_CERTIFICATE_H_