Deleted redundant SymmetricKey::GetRawKey().

components/sync/base/nigori.h

 // Copyright 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.
 
 #ifndef COMPONENTS_SYNC_BASE_NIGORI_H_
 #define COMPONENTS_SYNC_BASE_NIGORI_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 42 matching lines @@
 
   // Encrypts |value|. Note that on success, |encrypted| will be Base64
   // encoded.
   bool Encrypt(const std::string& value, std::string* encrypted) const;
 
   // Decrypts |value| into |decrypted|. It is assumed that |value| is Base64
   // encoded.
   bool Decrypt(const std::string& value, std::string* decrypted) const;
 
   // Exports the raw derived keys.
-  bool ExportKeys(std::string* user_key,
+  void ExportKeys(std::string* user_key,
                   std::string* encryption_key,
                   std::string* mac_key) const;
 
   static const char kSaltSalt[];  // The salt used to derive the user salt.
   static const size_t kSaltKeySizeInBits = 128;
   static const size_t kDerivedKeySizeInBits = 128;
   static const size_t kIvSize = 16;
   static const size_t kHashSize = 32;
 
   static const size_t kSaltIterations = 1001;
   static const size_t kUserIterations = 1002;
   static const size_t kEncryptionIterations = 1003;
   static const size_t kSigningIterations = 1004;
 
  private:
   // user_key isn't used any more, but legacy clients will fail to import a
   // nigori node without one. We preserve it for the sake of those clients, but
   // it should be removed once enough clients have upgraded to code that doesn't
   // enforce its presence.
   std::unique_ptr<crypto::SymmetricKey> user_key_;
   std::unique_ptr<crypto::SymmetricKey> encryption_key_;
   std::unique_ptr<crypto::SymmetricKey> mac_key_;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_BASE_NIGORI_H_