Wire up rtc_packet_ids to P2PSocketHostTcp, which is required for correct BWE in WebRTC.

content/browser/renderer_host/p2p/socket_host_tcp_unittest.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 <stddef.h>
 #include <stdint.h>
 
 #include <deque>
@@ skipping 231 matching lines @@
 
   std::string expected_data;
   expected_data.append(IntToSize(packet1.size()));
   expected_data.append(packet1.begin(), packet1.end());
   expected_data.append(IntToSize(packet2.size()));
   expected_data.append(packet2.begin(), packet2.end());
 
   EXPECT_EQ(expected_data, sent_data_);
 }
 
+TEST_F(P2PSocketHostTcpTest, PacketIdIsPropagated) {
+  base::MessageLoop message_loop;
+
+  socket_->set_async_write(true);
+
+  const int32_t kRtcPacketId = 1234;
+
+  EXPECT_CALL(sender_, Send(MatchSendPacketMetrics(kRtcPacketId)))
+      .Times(1)
+      .WillRepeatedly(DoAll(DeleteArg<0>(), Return(true)));
+
+  rtc::PacketOptions options;
+  options.packet_id = kRtcPacketId;
+  std::vector<char> packet1;
+  CreateStunRequest(&packet1);
+
+  socket_host_->Send(dest_.ip_address, packet1, options, 0);
+
+  base::RunLoop().RunUntilIdle();
+
+  std::string expected_data;
+  expected_data.append(IntToSize(packet1.size()));
+  expected_data.append(packet1.begin(), packet1.end());
+
+  EXPECT_EQ(expected_data, sent_data_);
+}
+
 TEST_F(P2PSocketHostTcpTest, SendDataWithPacketOptions) {
   std::vector<char> request_packet;
   CreateStunRequest(&request_packet);
 
   std::string received_data;
   received_data.append(IntToSize(request_packet.size()));
   received_data.append(request_packet.begin(), request_packet.end());
 
   EXPECT_CALL(
       sender_,
@@ skipping 134 matching lines @@
   base::RunLoop().RunUntilIdle();
 
   std::string expected_data;
   expected_data.append(packet1.begin(), packet1.end());
   expected_data.append(packet2.begin(), packet2.end());
 
   EXPECT_EQ(expected_data, sent_data_);
 }
 
 }  // namespace content