Give performance_browser_tests lots of love and attention.

media/cast/test/utility/udp_proxy.cc

 // 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.
 
 #include "media/cast/test/utility/udp_proxy.h"
 
 #include <math.h>
 #include <stdlib.h>
 #include <utility>
 #include <vector>
@@ skipping 575 matching lines @@
   BuildPipe(&pipe, new RandomSortedDelay(1E-3, 20E-3, 3));
   BuildPipe(&pipe, new Buffer(256 << 10, 20));
   BuildPipe(&pipe, new ConstantDelay(1E-3));
   BuildPipe(&pipe, new RandomSortedDelay(1E-3, 20E-3, 3));
   BuildPipe(&pipe, new RandomDrop(0.005));
   // This represents the buffer on the receiving device.
   BuildPipe(&pipe, new Buffer(256 << 10, 20));
   return pipe;
 }
 
+std::unique_ptr<PacketPipe> SlowNetwork() {
+  // This represents the buffer on the sender.
+  std::unique_ptr<PacketPipe> pipe;
+  BuildPipe(&pipe, new Buffer(256 << 10, 1.5));
+  BuildPipe(&pipe, new RandomDrop(0.005));
+  // This represents the buffer on the router.
+  BuildPipe(&pipe, new ConstantDelay(10E-3));
+  BuildPipe(&pipe, new RandomSortedDelay(10E-3, 20E-3, 3));
+  BuildPipe(&pipe, new Buffer(256 << 10, 20));
+  BuildPipe(&pipe, new ConstantDelay(10E-3));
+  BuildPipe(&pipe, new RandomSortedDelay(10E-3, 20E-3, 3));
+  BuildPipe(&pipe, new RandomDrop(0.005));
+  // This represents the buffer on the receiving device.
+  BuildPipe(&pipe, new Buffer(256 << 10, 20));
+  return pipe;
+}
+
 std::unique_ptr<PacketPipe> BadNetwork() {
   std::unique_ptr<PacketPipe> pipe;
   // This represents the buffer on the sender.
   BuildPipe(&pipe, new Buffer(64 << 10, 5)); // 64 kb buf, 5mbit/s
   BuildPipe(&pipe, new RandomDrop(0.05));  // 5% packet drop
   BuildPipe(&pipe, new RandomSortedDelay(2E-3, 20E-3, 1));
   // This represents the buffer on the router.
   BuildPipe(&pipe, new Buffer(64 << 10, 5));  // 64 kb buf, 4mbit/s
   BuildPipe(&pipe, new ConstantDelay(1E-3));
   // Random 40ms every other second
@@ skipping 248 matching lines @@
     net::NetLog* net_log) {
   std::unique_ptr<UDPProxy> ret(
       new UDPProxyImpl(local_port, destination, std::move(to_dest_pipe),
                        std::move(from_dest_pipe), net_log));
   return ret;
 }
 
 }  // namespace test
 }  // namespace cast
 }  // namespace media