Adding platform support check for NetworkObserver

net/android/network_change_notifier_android.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.
 
 ////////////////////////////////////////////////////////////////////////////////
 // Threading considerations:
 //
 // This class is designed to meet various threading guarantees starting from the
 // ones imposed by NetworkChangeNotifier:
 // - The notifier can be constructed on any thread.
@@ skipping 144 matching lines @@
   return delegate_->GetCurrentConnectionType();
 }
 
 void NetworkChangeNotifierAndroid::GetCurrentMaxBandwidthAndConnectionType(
     double* max_bandwidth_mbps,
     ConnectionType* connection_type) const {
   delegate_->GetCurrentMaxBandwidthAndConnectionType(max_bandwidth_mbps,
                                                      connection_type);
 }
 
+bool NetworkChangeNotifierAndroid::AreNetworkHandlesCurrentlySupported() const {
+  // Notifications for API using NetworkHandles only implemented for Android

[pauljensen, 2015/11/30 20:23:48]

API->APIs

[pauljensen, 2015/11/30 20:23:48]

Notifications->Notifications/querying

[Jana, 2015/11/30 22:31:06]

Modified comment -- see if it's better.

[Jana, 2015/11/30 22:31:06]

Done.

+  // versions >= L.
+  return base::android::BuildInfo::GetInstance()->sdk_int() >=
+         base::android::SDK_VERSION_LOLLIPOP;
+}
+
 void NetworkChangeNotifierAndroid::GetCurrentConnectedNetworks(
     NetworkChangeNotifier::NetworkList* networks) const {
   delegate_->GetCurrentlyConnectedNetworks(networks);
 }
 
 NetworkChangeNotifier::ConnectionType
 NetworkChangeNotifierAndroid::GetCurrentNetworkConnectionType(
     NetworkHandle network) const {
   return delegate_->GetNetworkConnectionType(network);
 }
@@ skipping 67 matching lines @@
   // so delay IPAddressChanged so they get merged with the following
   // ConnectionTypeChanged signal.
   params.ip_address_offline_delay_ = base::TimeDelta::FromSeconds(1);
   params.ip_address_online_delay_ = base::TimeDelta::FromSeconds(1);
   params.connection_type_offline_delay_ = base::TimeDelta::FromSeconds(0);
   params.connection_type_online_delay_ = base::TimeDelta::FromSeconds(0);
   return params;
 }
 
 }  // namespace net