Start calculating new combined NetworkChangeNotifier signal

chrome/browser/chromeos/net/network_change_notifier_chromeos.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 "chrome/browser/chromeos/net/network_change_notifier_chromeos.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
@@ skipping 34 matching lines @@
   }
 
   void OnNetworkChange() {
     InvalidateConfig();
     InvalidateHosts();
     ReadNow();
   }
 };
 
 NetworkChangeNotifierChromeos::NetworkChangeNotifierChromeos()
-    : has_active_network_(false),
+    : NetworkChangeNotifier(NetworkChangeCalculatorParamsChromeos()),
+      has_active_network_(false),
       connection_state_(chromeos::STATE_UNKNOWN),
       connection_type_(CONNECTION_NONE),
       ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {
   BrowserThread::PostDelayedTask(
          BrowserThread::UI, FROM_HERE,
          base::Bind(
              &NetworkChangeNotifierChromeos::UpdateInitialState, this),
          base::TimeDelta::FromMilliseconds(kInitialNotificationCheckDelayMS));
 }
 
@@ skipping 260 matching lines @@
           return CONNECTION_4G;
       }
     case chromeos::TYPE_BLUETOOTH:
     case chromeos::TYPE_VPN:
     case chromeos::TYPE_UNKNOWN:
       break;
   }
   return net::NetworkChangeNotifier::CONNECTION_UNKNOWN;
 }
 
+// static
+net::NetworkChangeNotifier::NetworkChangeCalculatorParams
+NetworkChangeNotifierChromeos::NetworkChangeCalculatorParamsChromeos() {
+  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(4000);
+  params.ip_address_online_delay_ = base::TimeDelta::FromMilliseconds(1000);
+  params.connection_type_offline_delay_ = base::TimeDelta::FromMilliseconds(0);
+  params.connection_type_online_delay_ = base::TimeDelta::FromMilliseconds(0);
+  return params;
+}
+
 }  // namespace chromeos