Link GCM heartbeat with wake on wifi preference

chrome/browser/chromeos/net/wake_on_wifi_manager.h

 // Copyright 2014 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 CHROME_BROWSER_CHROMEOS_NET_WAKE_ON_WIFI_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_NET_WAKE_ON_WIFI_MANAGER_H_
 
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/macros.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class Profile;
 
 namespace chromeos {
 
 // This class is responsible for managing the various wake-on-wifi related bits
 // of functionality in chrome.  It is responsible for communicating the user's
 // preferences to shill as well as listening for connections to the Google GCM
 // servers and sending that connection information down to shill.  This class is
 // owned by ChromeBrowserMainPartsChromeos.  This class is also NOT thread-safe
 // and should only be called on the UI thread.
 class WakeOnWifiManager : public content::NotificationObserver {
  public:
   enum WakeOnWifiFeature {
     WAKE_ON_NONE            = 0,
     WAKE_ON_PACKET          = 1,
     WAKE_ON_SSID            = 2,
     WAKE_ON_PACKET_AND_SSID = 3,
+    INVALID                 = 4,
   };
 
   static WakeOnWifiManager* Get();
 
   WakeOnWifiManager();
   ~WakeOnWifiManager() override;
 
   // Should be called whenever the primary user changes their preference for the
   // wake-on-wifi features that should be enabled.
   void OnPreferenceChanged(WakeOnWifiFeature feature);
 
   // content::NotificationObserver override.
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
  private:
   void OnProfileAdded(Profile* profile);
   void OnProfileDestroyed(Profile* profile);
 
+  WakeOnWifiFeature current_feature_;
+
   class WakeOnPacketConnectionObserver;
   base::ScopedPtrHashMap<Profile*, WakeOnPacketConnectionObserver>
       connection_observers_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(WakeOnWifiManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_NET_WAKE_ON_WIFI_MANAGER_H_