Detect situation when there is no missing send completion signal in P2PSocket implementation.

content/browser/renderer_host/p2p/socket_host_tcp.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 "content/browser/renderer_host/p2p/socket_host_tcp.h"
 
 #include "base/sys_byteorder.h"
 #include "content/common/p2p_messages.h"
 #include "ipc/ipc_sender.h"
 #include "jingle/glue/fake_ssl_client_socket.h"
@@ skipping 383 matching lines @@
   write_pending_ = false;
   HandleWriteResult(result);
   DoWrite();
 }
 
 void P2PSocketHostTcpBase::HandleWriteResult(int result) {
   DCHECK(write_buffer_.get());
   if (result >= 0) {
     write_buffer_->DidConsume(result);
     if (write_buffer_->BytesRemaining() == 0) {
-      message_sender_->Send(new P2PMsg_OnSendComplete(id_));
+      message_sender_->Send(
+          new P2PMsg_OnSendComplete(id_, P2PSendPacketMetrics()));
       if (write_queue_.empty()) {
         write_buffer_ = NULL;
       } else {
         write_buffer_ = write_queue_.front();
         write_queue_.pop();
         // Update how many bytes are still waiting to be sent.
         DecrementDelayedBytes(write_buffer_->size());
       }
     }
   } else if (result == net::ERR_IO_PENDING) {
@@ skipping 195 matching lines @@
   } else {
     packet_size += kTurnChannelDataHeaderSize;
     // Calculate any padding if present.
     if (packet_size % 4)
       *pad_bytes = 4 - packet_size % 4;
   }
   return packet_size;
 }
 
 }  // namespace content