Remove calls to deprecated MessageLoop methods on Windows and Linux.

net/tools/net_watcher/net_watcher.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.
 
 // This is a small utility that watches for and logs network changes.
 
 #include <memory>
 #include <string>
 #include <unordered_set>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/strings/string_split.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "net/base/network_change_notifier.h"
 #include "net/proxy/proxy_config.h"
 #include "net/proxy/proxy_config_service.h"
 #include "net/proxy/proxy_service.h"
 
 #if defined(USE_GLIB) && !defined(OS_CHROMEOS)
 #include <glib-object.h>
@@ skipping 179 matching lines @@
     const net::ProxyConfigService::ConfigAvailability availability =
         proxy_config_service->GetLatestProxyConfig(&config);
     LOG(INFO) << "Initial proxy config: "
               << ProxyConfigToString(config) << ", "
               << ConfigAvailabilityToString(availability);
   }
 
   LOG(INFO) << "Watching for network events...";
 
   // Start watching for events.
-  network_loop.Run();
+  base::RunLoop().Run();

[agl, 2016/08/06 00:44:00]

This one seems a little suspect, although I'm not sure. The |network_loop|
variable is still created and passed to a function, but never run?

[fdoray, 2016/08/06 01:26:14]

see previous comment.

Note that the implementation of MessageLoop::Run() is equivalent to the code
that I inlined here. MessageLoop::Run() will soon go away.
https://cs.chromium.org/chromium/src/base/message_loop/message_loop.cc?sq=pac...

 
   proxy_config_service->RemoveObserver(&net_watcher);
 
   // Uses |network_change_notifier|.
   net::NetworkChangeNotifier::RemoveDNSObserver(&net_watcher);
   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(&net_watcher);
   net::NetworkChangeNotifier::RemoveIPAddressObserver(&net_watcher);
   net::NetworkChangeNotifier::RemoveNetworkChangeObserver(&net_watcher);
 
   return 0;
 }