Always use recvmmsg or recvmsg if it's available, and consolidate ReadAndDispatchPackets and ReadAn…

net/tools/quic/quic_client.h

 // 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.
 //
 // A toy client, which connects to a specified port and sends QUIC
 // request to that endpoint.
 
 #ifndef NET_TOOLS_QUIC_QUIC_CLIENT_H_
 #define NET_TOOLS_QUIC_QUIC_CLIENT_H_
 
@@ skipping 263 matching lines @@
   bool initialized_;
 
   // If overflow_supported_ is true, this will be the number of packets dropped
   // during the lifetime of the server.
   QuicPacketCount packets_dropped_;
 
   // True if the kernel supports SO_RXQ_OVFL, the number of packets dropped
   // because the socket would otherwise overflow.
   bool overflow_supported_;
 
-  // If true, use recvmmsg for reading.
-  bool use_recvmmsg_;
-
   // If true, store the latest response code, headers, and body.
   bool store_response_;
   // HTTP response code from most recent response.
   size_t latest_response_code_;
   // HTTP/2 headers from most recent response.
   std::string latest_response_headers_;
   // Body of most recent response.
   std::string latest_response_body_;
   // HTTP/2 trailers from most recent response.
   std::string latest_response_trailers_;
@@ skipping 13 matching lines @@
   scoped_ptr<QuicPacketReader> packet_reader_;
 
   std::unique_ptr<ClientQuicDataToResend> push_promise_data_to_resend_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicClient);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_CLIENT_H_