[NetworkChangeNotifier] Return more specific network connection types (ethernet/wifi) on OSX

net/base/network_change_notifier.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.h"
 
 #include <limits>
 #include <unordered_set>
 
 #include "base/macros.h"
@@ skipping 797 matching lines @@
 NetworkChangeNotifier::ConnectionType
 NetworkChangeNotifier::ConnectionTypeFromInterfaceList(
     const NetworkInterfaceList& interfaces) {
   bool first = true;
   ConnectionType result = CONNECTION_NONE;
   for (size_t i = 0; i < interfaces.size(); ++i) {
 #if defined(OS_WIN)
     if (interfaces[i].friendly_name == "Teredo Tunneling Pseudo-Interface")
       continue;
 #endif
+#if defined(OS_MACOSX)
+    // Ignore tunnel and airdrop interfaces.
+    if (base::StartsWith(interfaces[i].friendly_name, "utun",
+                         base::CompareCase::SENSITIVE) ||
+        base::StartsWith(interfaces[i].friendly_name, "awdl",
+                         base::CompareCase::SENSITIVE)) {
+      continue;
+    }
+#endif
+
     // Remove VMware network interfaces as they're internal and should not be
     // used to determine the network connection type.
     if (base::ToLowerASCII(interfaces[i].friendly_name).find("vmnet") !=
         std::string::npos) {
       continue;
     }
     if (first) {
       first = false;
       result = interfaces[i].type;
     } else if (result != interfaces[i].type) {
@@ skipping 369 matching lines @@
 
 NetworkChangeNotifier::DisableForTest::~DisableForTest() {
   DCHECK(!g_network_change_notifier);
   g_network_change_notifier = network_change_notifier_;
 }
 
 void NetworkChangeNotifier::DNSObserver::OnInitialDNSConfigRead() {
 }
 
 }  // namespace net