Construct QuicSocketAddressImpl in QuicChromiumPacketReadder and pass it by const&.

net/quic/platform/api/quic_socket_address.h

 // Copyright (c) 2016 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.
 
 #ifndef NET_QUIC_PLATFORM_API_QUIC_SOCKET_ADDRESS_H_
 #define NET_QUIC_PLATFORM_API_QUIC_SOCKET_ADDRESS_H_
 
 #include "net/quic/platform/api/quic_export.h"
 #include "net/quic/platform/api/quic_ip_address.h"
 #include "net/quic/platform/impl/quic_socket_address_impl.h"
 
 namespace net {
 
 class QUIC_EXPORT_PRIVATE QuicSocketAddress {
   // A class representing a socket endpoint address (i.e., IP address plus a
   // port) in QUIC. The actual implementation (platform dependent) of a socket
   // address is in QuicSocketAddressImpl.
  public:
   QuicSocketAddress() = default;
   QuicSocketAddress(QuicIpAddress address, uint16_t port);
   explicit QuicSocketAddress(const struct sockaddr_storage& saddr);
   explicit QuicSocketAddress(const struct sockaddr& saddr);
   explicit QuicSocketAddress(const QuicSocketAddressImpl& impl);
   QuicSocketAddress(const QuicSocketAddress& other) = default;
   QuicSocketAddress& operator=(const QuicSocketAddress& other) = default;
   QuicSocketAddress& operator=(QuicSocketAddress&& other) = default;
-  QUIC_EXPORT_PRIVATE friend bool operator==(QuicSocketAddress lhs,
-                                             QuicSocketAddress rhs);
-  QUIC_EXPORT_PRIVATE friend bool operator!=(QuicSocketAddress lhs,
-                                             QuicSocketAddress rhs);
+  QUIC_EXPORT_PRIVATE friend bool operator==(const QuicSocketAddress& lhs,
+                                             const QuicSocketAddress& rhs);
+  QUIC_EXPORT_PRIVATE friend bool operator!=(const QuicSocketAddress& lhs,
+                                             const QuicSocketAddress& rhs);
 
   bool IsInitialized() const;
   std::string ToString() const;
   int FromSocket(int fd);
   QuicSocketAddress Normalized() const;
 
   QuicIpAddress host() const;
   uint16_t port() const;
   sockaddr_storage generic_address() const;
   const QuicSocketAddressImpl& impl() const { return impl_; }
 
  private:
   QuicSocketAddressImpl impl_;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_PLATFORM_API_QUIC_SOCKET_ADDRESS_H_