Add WiFi SSID getter to NetworkChangeNotifier.

net/base/network_change_notifier_mac.h

 // 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.
 
 #ifndef NET_BASE_NETWORK_CHANGE_NOTIFIER_MAC_H_
 #define NET_BASE_NETWORK_CHANGE_NOTIFIER_MAC_H_
 
 #include <SystemConfiguration/SystemConfiguration.h>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "net/base/network_change_notifier.h"
 #include "net/base/network_config_watcher_mac.h"
 
 namespace net {
 
 class NetworkChangeNotifierMac: public NetworkChangeNotifier {
  public:
   NetworkChangeNotifierMac();
   ~NetworkChangeNotifierMac() override;
 
   // NetworkChangeNotifier implementation:
   ConnectionType GetCurrentConnectionType() const override;
+  std::string GetCurrentWiFiSSID() const override;
 
   // Forwarder just exists to keep the NetworkConfigWatcherMac API out of
   // NetworkChangeNotifierMac's public API.
   class Forwarder : public NetworkConfigWatcherMac::Delegate {
    public:
     explicit Forwarder(NetworkChangeNotifierMac* net_config_watcher)
         : net_config_watcher_(net_config_watcher) {}
 
     // NetworkConfigWatcherMac::Delegate implementation:
     void Init() override;
@@ skipping 35 matching lines @@
   scoped_ptr<const NetworkConfigWatcherMac> config_watcher_;
 
   scoped_ptr<DnsConfigServiceThread> dns_config_service_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierMac);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NETWORK_CHANGE_NOTIFIER_MAC_H_