Code refactor related to WeakPtrFactory in src/components module

components/metrics/net/network_metrics_provider.h

Index: components/metrics/net/network_metrics_provider.h
diff --git a/components/metrics/net/network_metrics_provider.h b/components/metrics/net/network_metrics_provider.h
index 43a0318635f553d3035d25ac9622aaf0e1cd0012..29f0ed7723510393a8ce2977442b0d511c4360ec 100644
--- a/components/metrics/net/network_metrics_provider.h
+++ b/components/metrics/net/network_metrics_provider.h
@@ -66,11 +66,11 @@ class NetworkMetricsProvider
   // 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);
 };