Migrate deprecated StringPiece::CopyToString to string::assign (or construction of string, if appro…

net/quic/core/crypto/quic_crypto_client_config.cc

 // Copyright 2013 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 "net/quic/core/crypto/quic_crypto_client_config.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "base/metrics/histogram_macros.h"
@@ skipping 266 matching lines @@
 
   string error_details;
   ServerConfigState state =
       SetServerConfig(server_config, now, expiration_time, &error_details);
   RecordDiskCacheServerConfigState(state);
   if (state != SERVER_CONFIG_VALID) {
     QUIC_DVLOG(1) << "SetServerConfig failed with " << error_details;
     return false;
   }
 
-  chlo_hash.CopyToString(&chlo_hash_);
-  signature.CopyToString(&server_config_sig_);
-  source_address_token.CopyToString(&source_address_token_);
+  chlo_hash_.assign(chlo_hash.data(), chlo_hash.size());
+  server_config_sig_.assign(signature.data(), signature.size());
+  source_address_token_.assign(source_address_token.data(),
+                               source_address_token.size());
   certs_ = certs;
   cert_sct_ = cert_sct;
   return true;
 }
 
 const string& QuicCryptoClientConfig::CachedState::server_config() const {
   return server_config_;
 }
 
 const string& QuicCryptoClientConfig::CachedState::source_address_token()
@@ skipping 692 matching lines @@
   }
 
   // Update canonical version to point at the "most recent" entry.
   canonical_server_map_[suffix_server_id] = server_id;
 
   server_state->InitializeFrom(*canonical_state);
   return true;
 }
 
 }  // namespace net