Make necessary changes for chromecast build as chromecast has it own implementation of NetworkChang…

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 "base/metrics/histogram.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
 #include "build/build_config.h"
@@ skipping 489 matching lines @@
 // static
 NetworkChangeNotifier* NetworkChangeNotifier::Create() {
   if (g_network_change_notifier_factory)
     return g_network_change_notifier_factory->CreateInstance();
 
 #if defined(OS_WIN)
   NetworkChangeNotifierWin* network_change_notifier =
       new NetworkChangeNotifierWin();
   network_change_notifier->WatchForAddressChange();
   return network_change_notifier;
-#elif defined(OS_CHROMEOS) || defined(OS_ANDROID)
-  // ChromeOS and Android builds MUST use their own class factory.
+#elif defined(USE_NETWORK_CHANGE_NOTIFIER_FACTORY)
+  // Check that we never reach here for platforms/products that use their
+  // own class factory.
 #if !defined(OS_CHROMEOS)
   // TODO(oshima): ash_shell do not have access to chromeos'es
   // notifier yet. Re-enable this when chromeos'es notifier moved to
   // chromeos root directory. crbug.com/119298.
   CHECK(false);
 #endif
   return NULL;
 #elif defined(OS_LINUX)
   return NetworkChangeNotifierLinux::Create();
 #elif defined(OS_MACOSX)
@@ skipping 334 matching lines @@
   DCHECK(g_network_change_notifier);
   g_network_change_notifier = NULL;
 }
 
 NetworkChangeNotifier::DisableForTest::~DisableForTest() {
   DCHECK(!g_network_change_notifier);
   g_network_change_notifier = network_change_notifier_;
 }
 
 }  // namespace net