Moves QuicTag typedefs, and QuicTag utility methods to quic_tag.{h,cc}. No behavior change.

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 <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 514 matching lines @@
     *error_details = "Missing AEAD or KEXS";
     return QUIC_INVALID_CRYPTO_MESSAGE_PARAMETER;
   }
 
   // AEAD: the work loads on the client and server are symmetric. Since the
   // client is more likely to be CPU-constrained, break the tie by favoring
   // the client's preference.
   // Key exchange: the client does more work than the server, so favor the
   // client's preference.
   size_t key_exchange_index;
-  if (!QuicUtils::FindMutualTag(aead, their_aeads, num_their_aeads,
-                                &out_params->aead, nullptr) ||
-      !QuicUtils::FindMutualTag(
-          kexs, their_key_exchanges, num_their_key_exchanges,
-          &out_params->key_exchange, &key_exchange_index)) {
+  if (!FindMutualQuicTag(aead, their_aeads, num_their_aeads, &out_params->aead,
+                         nullptr) ||
+      !FindMutualQuicTag(kexs, their_key_exchanges, num_their_key_exchanges,
+                         &out_params->key_exchange, &key_exchange_index)) {
     *error_details = "Unsupported AEAD or KEXS";
     return QUIC_CRYPTO_NO_SUPPORT;
   }
   out->SetVector(kAEAD, QuicTagVector{out_params->aead});
   out->SetVector(kKEXS, QuicTagVector{out_params->key_exchange});
 
   if (!tb_key_params.empty() &&
       server_id.privacy_mode() == PRIVACY_MODE_DISABLED) {
     const QuicTag* their_tbkps;
     size_t num_their_tbkps;
     switch (scfg->GetTaglist(kTBKP, &their_tbkps, &num_their_tbkps)) {
       case QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND:
         break;
       case QUIC_NO_ERROR:
-        if (QuicUtils::FindMutualTag(
-                tb_key_params, their_tbkps, num_their_tbkps,
-                &out_params->token_binding_key_param, nullptr)) {
+        if (FindMutualQuicTag(tb_key_params, their_tbkps, num_their_tbkps,
+                              &out_params->token_binding_key_param, nullptr)) {
           out->SetVector(kTBKP,
                          QuicTagVector{out_params->token_binding_key_param});
         }
         break;
       default:
         *error_details = "Invalid TBKP";
         return QUIC_INVALID_CRYPTO_MESSAGE_PARAMETER;
     }
   }
 
@@ skipping 408 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