Update from https://crrev.com/304418

net/udp/udp_socket_libevent.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/udp/udp_socket_libevent.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <netdb.h>
 #include <net/if.h>
 #include <netinet/in.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/metrics/stats_counters.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/rand_util.h"
 #include "net/base/io_buffer.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/base/net_util.h"
+#include "net/base/network_activity_monitor.h"
 #include "net/socket/socket_descriptor.h"
 #include "net/udp/udp_net_log_parameters.h"
 
 
 namespace net {
 
 namespace {
 
 const int kBindRetries = 10;
 const int kPortStart = 1024;
@@ skipping 370 matching lines @@
     bool is_address_valid = address.FromSockAddr(addr, addr_len);
     net_log_.AddEvent(
         NetLog::TYPE_UDP_BYTES_RECEIVED,
         CreateNetLogUDPDataTranferCallback(
             result, bytes,
             is_address_valid ? &address : NULL));
   }
 
   base::StatsCounter read_bytes("udp.read_bytes");
   read_bytes.Add(result);
+  NetworkActivityMonitor::GetInstance()->IncrementBytesReceived(result);
 }
 
 int UDPSocketLibevent::CreateSocket(int addr_family) {
   addr_family_ = addr_family;
   socket_ = CreatePlatformSocket(addr_family_, SOCK_DGRAM, 0);
   if (socket_ == kInvalidSocket)
     return MapSystemError(errno);
   if (SetNonBlocking(socket_)) {
     const int err = MapSystemError(errno);
     Close();
@@ skipping 24 matching lines @@
   }
 
   if (net_log_.IsLogging()) {
     net_log_.AddEvent(
         NetLog::TYPE_UDP_BYTES_SENT,
         CreateNetLogUDPDataTranferCallback(result, bytes, address));
   }
 
   base::StatsCounter write_bytes("udp.write_bytes");
   write_bytes.Add(result);
+  NetworkActivityMonitor::GetInstance()->IncrementBytesSent(result);
 }
 
 int UDPSocketLibevent::InternalRecvFrom(IOBuffer* buf, int buf_len,
                                         IPEndPoint* address) {
   int bytes_transferred;
   int flags = 0;
 
   SockaddrStorage storage;
 
   bytes_transferred =
@@ skipping 296 matching lines @@
     return MapSystemError(errno);
 
   return OK;
 }
 
 void UDPSocketLibevent::DetachFromThread() {
   base::NonThreadSafe::DetachFromThread();
 }
 
 }  // namespace net