Code refactor related to WeakPtrFactory in src/components module

components/metrics/net/network_metrics_provider.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 COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_
 #define COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 48 matching lines @@
   bool connection_type_is_ambiguous_;
   // The connection type according to net::NetworkChangeNotifier.
   net::NetworkChangeNotifier::ConnectionType connection_type_;
 
   // True if |wifi_phy_layer_protocol_| changed during the lifetime of the log.
   bool wifi_phy_layer_protocol_is_ambiguous_;
   // The PHY mode of the currently associated access point obtained via
   // net::GetWifiPHYLayerProtocol.
   net::WifiPHYLayerProtocol wifi_phy_layer_protocol_;
 
-  base::WeakPtrFactory<NetworkMetricsProvider> weak_ptr_factory_;
-
   // Helper object for retrieving connected wifi access point information.
   scoped_ptr<WifiAccessPointInfoProvider> wifi_access_point_info_provider_;
 
+  base::WeakPtrFactory<NetworkMetricsProvider> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(NetworkMetricsProvider);
 };
 
 #endif  // COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_