Revert "Linux (nss) implementations of RSAPrivateKey and SignatureCreator"

base/crypto/signature_creator.h

 // Copyright (c) 2009 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 BASE_CRYPTO_SIGNATURE_CREATOR_H_
 #define BASE_CRYPTO_SIGNATURE_CREATOR_H_
 
-#include "build/build_config.h"
-
-#if defined(USE_NSS)
-#include <cryptoht.h>
-#elif defined(OS_MACOSX)
-// TODO(port)
-#elif defined(OS_WIN)
+#if defined(OS_WIN)
 #include <windows.h>
 #include <wincrypt.h>
+#else
+// TODO(PORT)
 #endif
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/crypto/rsa_private_key.h"
 
 namespace base {
 
 // Signs data using a bare private key (as opposed to a full certificate).
 // Currently can only sign data using SHA-1 with RSA encryption.
 class SignatureCreator {
  public:
   // Create an instance. The caller must ensure that the provided PrivateKey
   // instance outlives the created SignatureCreator.
   static SignatureCreator* Create(RSAPrivateKey* key);
 
   ~SignatureCreator();
 
   // Update the signature with more data.
   bool Update(const uint8* data_part, int data_part_len);
 
   // Finalize the signature.
   bool Final(std::vector<uint8>* signature);
 
  private:
   // Private constructor. Use the Create() method instead.
-  SignatureCreator();
+  SignatureCreator() {}
 
   RSAPrivateKey* key_;
 
-#if defined(USE_NSS)
-  SGNContext* sign_context_;
-#elif defined(OS_MACOSX)
-  // TODO(port)
-#elif defined(OS_WIN)
+#if defined(OS_WIN)
   HCRYPTHASH hash_object_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(SignatureCreator);
 };
 
 }  // namespace base
 
 #endif  // BASE_CRYPTO_SIGNATURE_CREATOR_H_