Speed up net_unittests by ~20s by manipulating tcp_pinger timeouts.

net/socket/tcp_pinger.h

 // Copyright (c) 2009 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 NET_SOCKET_TCP_PINGER_H_
 #define NET_SOCKET_TCP_PINGER_H_
 
 #include "base/compiler_specific.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
@@ skipping 23 matching lines @@
     base::Thread::Options options;
     options.message_loop_type = MessageLoop::TYPE_IO;
     io_thread_.StartWithOptions(options);
   }
 
   ~TCPPinger() {
     io_thread_.message_loop()->ReleaseSoon(FROM_HERE, worker_);
   }
 
   int Ping() {
-    // Default is 10 tries, each with a timeout of 1000ms,
+    // Default is 40 tries, each with a timeout of 250ms,
     // for a total max timeout of 10 seconds.
-    return Ping(base::TimeDelta::FromMilliseconds(1000), 10);
+    return Ping(base::TimeDelta::FromMilliseconds(250), 40);
   }
 
   int Ping(base::TimeDelta tryTimeout, int nTries) {
     int err = ERR_IO_PENDING;
     // Post a request to do the connect on that thread.
     for (int i = 0; i < nTries; i++) {
       io_thread_.message_loop()->PostTask(FROM_HERE,
         NewRunnableMethod(worker_,
         &net::TCPPinger::Worker::DoConnect));
       // Timeout here in case remote host offline
@@ skipping 66 matching lines @@
   };
 
   base::Thread io_thread_;
   Worker* worker_;
   DISALLOW_COPY_AND_ASSIGN(TCPPinger);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_TCP_PINGER_H_