Report network stats in the scroll performance tests

remoting/test/fake_socket_factory.h

 // Copyright 2014 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 REMOTING_TEST_FAKE_SOCKET_FACTORY_H_
 #define REMOTING_TEST_FAKE_SOCKET_FACTORY_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 35 matching lines @@
   //    l = NormalRand(average, stddev) + bytes_buffered / bandwidth .
   //
   // Where bytes_buffered is the current level in the leaky bucket used to
   // control bandwidth.
   void SetLatency(base::TimeDelta average, base::TimeDelta stddev);
 
   void set_out_of_order_rate(double out_of_order_rate) {
     out_of_order_rate_ = out_of_order_rate;
   }
 
+  void ResetStats();
+
+  base::TimeDelta average_buffer_delay() {
+    return total_packets_received_ > 0
+               ? (total_buffer_delay_ / total_packets_received_)
+               : base::TimeDelta();
+  }
+  base::TimeDelta max_buffer_delay() { return max_buffer_delay_; }
+  double drop_rate() {
+    return static_cast<double>(total_packets_dropped_) /
+           (total_packets_received_ + total_packets_dropped_);
+  }
+
   // rtc::PacketSocketFactory interface.
   rtc::AsyncPacketSocket* CreateUdpSocket(
       const rtc::SocketAddress& local_address,
       uint16_t min_port,
       uint16_t max_port) override;
   rtc::AsyncPacketSocket* CreateServerTcpSocket(
       const rtc::SocketAddress& local_address,
       uint16_t min_port,
       uint16_t max_port,
       int opts) override;
@@ skipping 46 matching lines @@
   std::unique_ptr<LeakyBucket> leaky_bucket_;
   base::TimeDelta latency_average_;
   base::TimeDelta latency_stddev_;
   double out_of_order_rate_;
 
   UdpSocketsMap udp_sockets_;
   uint16_t next_port_;
 
   std::list<PendingPacket> pending_packets_;
 
+  int total_packets_received_ = 0;
+  int total_packets_dropped_ = 0;
+  base::TimeDelta total_buffer_delay_;
+  base::TimeDelta max_buffer_delay_;
+
   base::WeakPtrFactory<FakePacketSocketFactory> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FakePacketSocketFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_TEST_FAKE_SOCKET_FACTORY_H_