crypto: Add critpto_api.h and annotate the current exports needed to run

crypto/encryptor.h

 // Copyright (c) 2011 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 CRYPTO_ENCRYPTOR_H_
 #define CRYPTO_ENCRYPTOR_H_
 #pragma once
 
 #include <string>
 
 #include "build/build_config.h"
+#include "crypto/crypto_api.h"
 
 #if defined(USE_NSS)
 #include "crypto/scoped_nss_types.h"
 #elif defined(OS_WIN)
 #include "crypto/scoped_capi_types.h"
 #endif
 
 namespace crypto {
 
 class SymmetricKey;
 
-class Encryptor {
+class CRYPTO_API Encryptor {
  public:
   enum Mode {
     CBC
   };
   Encryptor();
   virtual ~Encryptor();
 
   // Initializes the encryptor using |key| and |iv|. Returns false if either the
   // key or the initialization vector cannot be used.
   bool Init(SymmetricKey* key, Mode mode, const std::string& iv);
@@ skipping 26 matching lines @@
   std::string iv_;
 #elif defined(OS_WIN)
   ScopedHCRYPTKEY capi_key_;
   DWORD block_size_;
 #endif
 };
 
 }  // namespace crypto
 
 #endif  // CRYPTO_ENCRYPTOR_H_