Deleted redundant SymmetricKey::GetRawKey().

crypto/symmetric_key.cc

 // 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.
 
 #include "crypto/symmetric_key.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 82 matching lines @@
     // versa. Note that BoringSSL does not support AES-192.
     if (raw_key.size() != 128/8 && raw_key.size() != 256/8)
       return nullptr;
   }
 
   std::unique_ptr<SymmetricKey> key(new SymmetricKey);
   key->key_ = raw_key;
   return key;
 }
 
-bool SymmetricKey::GetRawKey(std::string* raw_key) const {
-  *raw_key = key_;
-  return true;
-}
-
 SymmetricKey::SymmetricKey() = default;
 
 }  // namespace crypto