Create a Perspective enum to use instead of a bool is_server to improve

net/quic/quic_crypto_client_stream.cc

 // Copyright (c) 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.
 
 #include "net/quic/quic_crypto_client_stream.h"
 
 #include "base/metrics/histogram.h"
 #include "base/profiler/scoped_tracker.h"
 #include "net/quic/crypto/crypto_protocol.h"
 #include "net/quic/crypto/crypto_utils.h"
@@ skipping 70 matching lines @@
       next_state_(STATE_IDLE),
       num_client_hellos_(0),
       crypto_config_(crypto_config),
       server_id_(server_id),
       generation_counter_(0),
       channel_id_sent_(false),
       channel_id_source_callback_run_(false),
       channel_id_source_callback_(nullptr),
       verify_context_(verify_context),
       proof_verify_callback_(nullptr) {
-  DCHECK(!session->connection()->is_server());
+  DCHECK_EQ(Perspective::IS_CLIENT, session->connection()->perspective());
 }
 
 QuicCryptoClientStream::~QuicCryptoClientStream() {
   if (channel_id_source_callback_) {
     channel_id_source_callback_->Cancel();
   }
   if (proof_verify_callback_) {
     proof_verify_callback_->Cancel();
   }
 }
@@ skipping 554 matching lines @@
     }
   }
   return false;
 }
 
 QuicClientSessionBase* QuicCryptoClientStream::client_session() {
   return reinterpret_cast<QuicClientSessionBase*>(session());
 }
 
 }  // namespace net