Start calculating new combined NetworkChangeNotifier signal

net/base/network_change_notifier_linux.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 "net/base/network_change_notifier_linux.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/threading/thread.h"
 #include "net/base/address_tracker_linux.h"
@@ skipping 51 matching lines @@
 
 void NetworkChangeNotifierLinux::Thread::CleanUp() {
   dns_config_service_.reset();
 }
 
 NetworkChangeNotifierLinux* NetworkChangeNotifierLinux::Create() {
   return new NetworkChangeNotifierLinux();
 }
 
 NetworkChangeNotifierLinux::NetworkChangeNotifierLinux()
-    : notifier_thread_(new Thread()) {
+    : NetworkChangeNotifier(NetworkChangeCalculatorParamsLinux()),
+      notifier_thread_(new Thread()) {
   // We create this notifier thread because the notification implementation
   // needs a MessageLoopForIO, and there's no guarantee that
   // MessageLoop::current() meets that criterion.
   base::Thread::Options thread_options(MessageLoop::TYPE_IO, 0);
   notifier_thread_->StartWithOptions(thread_options);
 }
 
 NetworkChangeNotifierLinux::~NetworkChangeNotifierLinux() {
   // Stopping from here allows us to sanity- check that the notifier
   // thread shut down properly.
   notifier_thread_->Stop();
 }
 
+// static
+NetworkChangeNotifier::NetworkChangeCalculatorParams
+NetworkChangeNotifierLinux::NetworkChangeCalculatorParamsLinux() {
+  NetworkChangeCalculatorParams params;
+  // Delay values arrived at by simple experimentation and adjusted so as to
+  // produce a single signal when switching between network connections.
+  params.ip_address_offline_delay_ = base::TimeDelta::FromMilliseconds(2000);
+  params.ip_address_online_delay_ = base::TimeDelta::FromMilliseconds(2000);
+  params.connection_type_offline_delay_ =
+      base::TimeDelta::FromMilliseconds(1500);
+  params.connection_type_online_delay_ = base::TimeDelta::FromMilliseconds(500);
+  return params;
+}
+
 NetworkChangeNotifier::ConnectionType
 NetworkChangeNotifierLinux::GetCurrentConnectionType() const {
   return notifier_thread_->GetCurrentConnectionType();
 }
 
 const internal::AddressTrackerLinux*
 NetworkChangeNotifierLinux::GetAddressTrackerInternal() const {
   return notifier_thread_->address_tracker();
 }
 
 }  // namespace net