[net] Add WifiPhyMode to SystemProfile

chrome/browser/metrics/metrics_network_observer.h

Index: chrome/browser/metrics/metrics_network_observer.h
diff --git a/chrome/browser/metrics/metrics_network_observer.h b/chrome/browser/metrics/metrics_network_observer.h
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index 0000000000000000000000000000000000000000..fb32ec4b8df731487d98646f8811579a3719700f
--- /dev/null
+++ b/chrome/browser/metrics/metrics_network_observer.h
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+// Copyright (c) 2013 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_METRICS_METRICS_NETWORK_OBSERVER_H_
+#define CHROME_BROWSER_METRICS_METRICS_NETWORK_OBSERVER_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "chrome/common/metrics/proto/system_profile.pb.h"
+#include "net/base/net_util.h"
+#include "net/base/network_change_notifier.h"
+
+using metrics::SystemProfileProto;
+
+// Registers as observer with net::NetworkChangeNotifier and keeps track of
+// the network environment.
+class MetricsNetworkObserver
+    : public net::NetworkChangeNotifier::ConnectionTypeObserver {
+ public:
+  MetricsNetworkObserver();
+  virtual ~MetricsNetworkObserver();
+
+  // Resets the "ambiguous" flags. Call when the environment is recorded.
+  void Reset();
+
+  // ConnectionTypeObserver:
+  virtual void OnConnectionTypeChanged(
+      net::NetworkChangeNotifier::ConnectionType type) OVERRIDE;
+
+  bool connection_type_is_ambiguous() const {
+    return connection_type_is_ambiguous_;
+  }
+
+  SystemProfileProto::Network::ConnectionType connection_type() const;
+
+  bool wifi_phy_layer_protocol_is_ambiguous() const {
+    return wifi_phy_layer_protocol_is_ambiguous_;
+  }
+
+  SystemProfileProto::Network::WifiPHYLayerProtocol
+  wifi_phy_layer_protocol() const;
+
+ private:
+  // Posts a call to net::GetWifiPHYLayerProtocol on the blocking pool.
+  void ProbeWifiPHYLayerProtocol();
+  // Callback from the blocking pool with the result of
+  // net::GetWifiPHYLayerProtocol.
+  void OnWifiPHYLayerProtocolResult(net::WifiPHYLayerProtocol* mode);
+
+  base::WeakPtrFactory<MetricsNetworkObserver> weak_ptr_factory_;
+
+  // True if |connection_type_| changed during the lifetime of the log.
+  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_;
+
+  DISALLOW_COPY_AND_ASSIGN(MetricsNetworkObserver);
+};
+
+#endif  // CHROME_BROWSER_METRICS_METRICS_NETWORK_OBSERVER_H_