base: Remove the string logging from CHECK().

net/tools/quic/quic_client_base.cc

 // Copyright (c) 2015 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/tools/quic/quic_client_base.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/core/crypto/quic_random.h"
 #include "net/quic/core/quic_server_id.h"
 #include "net/quic/core/spdy_utils.h"
@@ skipping 360 matching lines @@
   QuicConnectionId server_designated_id = GetNextServerDesignatedConnectionId();
   return server_designated_id ? server_designated_id
                               : GenerateNewConnectionId();
 }
 
 QuicConnectionId QuicClientBase::GetNextServerDesignatedConnectionId() {
   QuicCryptoClientConfig::CachedState* cached =
       crypto_config_.LookupOrCreate(server_id_);
   // If the cached state indicates that we should use a server-designated
   // connection ID, then return that connection ID.
-  CHECK(cached != nullptr) << "QuicClientCryptoConfig::LookupOrCreate returned "
-                           << "unexpected nullptr.";
+  // QuicClientCryptoConfig::LookupOrCreate returned unexpected nullptr.
+  CHECK(cached != nullptr);
   return cached->has_server_designated_connection_id()
              ? cached->GetNextServerDesignatedConnectionId()
              : 0;
 }
 
 QuicConnectionId QuicClientBase::GenerateNewConnectionId() {
   return QuicRandom::GetInstance()->RandUint64();
 }
 
 void QuicClientBase::MaybeAddDataToResend(const SpdyHeaderBlock& headers,
@@ skipping 83 matching lines @@
   QUIC_BUG_IF(!store_response_) << "Response not stored!";
   return latest_response_body_;
 }
 
 const string& QuicClientBase::latest_response_trailers() const {
   QUIC_BUG_IF(!store_response_) << "Response not stored!";
   return latest_response_trailers_;
 }
 
 }  // namespace net