Add wifi AP info to system profile metrics

chrome/browser/metrics/network_metrics_provider.h

Index: chrome/browser/metrics/network_metrics_provider.h
diff --git a/chrome/browser/metrics/network_metrics_provider.h b/chrome/browser/metrics/network_metrics_provider.h
index 21bd4f830cef465133a49b2ca957138ef6e598c3..d57f8dde1871f10ff09ef78eaef17c00e44a77b5 100644
--- a/chrome/browser/metrics/network_metrics_provider.h
+++ b/chrome/browser/metrics/network_metrics_provider.h
@@ -12,6 +12,7 @@
 #include "components/metrics/proto/system_profile.pb.h"
 #include "net/base/net_util.h"
 #include "net/base/network_change_notifier.h"
+#include "net/base/wifi_access_point_info_provider.h"
 
 // Registers as observer with net::NetworkChangeNotifier and keeps track of
 // the network environment.
@@ -42,6 +43,12 @@ class NetworkMetricsProvider
   // net::GetWifiPHYLayerProtocol.
   void OnWifiPHYLayerProtocolResult(net::WifiPHYLayerProtocol mode);
 
+  // Writes info about the wireless access points that this system is
+  // connected to.
+  void WriteWifiAccessPointProto(
+      const net::WifiAccessPointInfo& info,
+      metrics::SystemProfileProto::Network* network_proto);
+
   // True if |connection_type_| changed during the lifetime of the log.
   bool connection_type_is_ambiguous_;
   // The connection type according to net::NetworkChangeNotifier.
@@ -55,6 +62,9 @@ class NetworkMetricsProvider
 
   base::WeakPtrFactory<NetworkMetricsProvider> weak_ptr_factory_;
 
+  // Helper object for retrieving connected wifi access point information.
+  scoped_ptr<net::WifiAccessPointInfoProvider> wifi_access_point_info_provider_;
+
   DISALLOW_COPY_AND_ASSIGN(NetworkMetricsProvider);
 };