Provide NetworkChangeNotifierAndroid with the actual initial connection type.

net/android/network_change_notifier_android.cc

Index: net/android/network_change_notifier_android.cc
diff --git a/net/android/network_change_notifier_android.cc b/net/android/network_change_notifier_android.cc
index 6dce66981fbd921bc2d1bedbae3e26b73becd735..d297ad5638657c104d2defe45a12352146b95707 100644
--- a/net/android/network_change_notifier_android.cc
+++ b/net/android/network_change_notifier_android.cc
@@ -73,9 +73,12 @@ NetworkChangeNotifierAndroid::GetCurrentConnectionType() const {
 
 void NetworkChangeNotifierAndroid::OnConnectionTypeChanged(
     ConnectionType new_connection_type) {
-  SetConnectionType(new_connection_type);
-  NetworkChangeNotifier::NotifyObserversOfIPAddressChange();
-  NetworkChangeNotifier::NotifyObserversOfConnectionTypeChange();
+  ConnectionType previous_connection_type = SetConnectionType(
+      new_connection_type);
+  if (new_connection_type != previous_connection_type) {
+    NetworkChangeNotifier::NotifyObserversOfIPAddressChange();
+    NetworkChangeNotifier::NotifyObserversOfConnectionTypeChange();
+  }
 }
 
 // static
@@ -105,10 +108,13 @@ NetworkChangeNotifierAndroid::NetworkChangeCalculatorParamsAndroid() {
   return params;
 }
 
-void NetworkChangeNotifierAndroid::SetConnectionType(
+NetworkChangeNotifier::ConnectionType
+NetworkChangeNotifierAndroid::SetConnectionType(
     ConnectionType new_connection_type) {
   base::AutoLock auto_lock(connection_type_lock_);
+  ConnectionType previous_connection_type = connection_type_;
   connection_type_ = new_connection_type;
+  return previous_connection_type;
 }
 
 }  // namespace net