[net] Add WifiPhyMode to SystemProfile

chrome/browser/metrics/metrics_network_observer.cc

+// 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.
+
+#include "chrome/browser/metrics/metrics_network_observer.h"
+
+#include "base/compiler_specific.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace {
+
+void ReadWifiPHYLayerProtocol(net::WifiPHYLayerProtocol* phy_layer_protocol) {
+  *phy_layer_protocol = net::GetWifiPHYLayerProtocol();
+}
+
+}  // namespace
+
+MetricsNetworkObserver::MetricsNetworkObserver()
+    : weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
+      connection_type_is_ambiguous_(false),
+      wifi_phy_layer_protocol_is_ambiguous_(false),
+      wifi_phy_layer_protocol_(net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN) {
+  net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
+  connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
+  ProbeWifiPHYLayerProtocol();
+}
+
+MetricsNetworkObserver::~MetricsNetworkObserver() {
+  net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
+}
+
+void MetricsNetworkObserver::Reset() {
+  connection_type_is_ambiguous_ = false;
+  connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
+  wifi_phy_layer_protocol_is_ambiguous_ = false;
+}
+
+void MetricsNetworkObserver::OnConnectionTypeChanged(
+      net::NetworkChangeNotifier::ConnectionType type) {
+  if (type == net::NetworkChangeNotifier::CONNECTION_NONE)
+    return;
+  if (type != connection_type_ &&
+      connection_type_ != net::NetworkChangeNotifier::CONNECTION_NONE) {
+    connection_type_is_ambiguous_ = true;
+  }
+  connection_type_ = type;
+
+  ProbeWifiPHYLayerProtocol();
+}
+
+SystemProfileProto::Network::ConnectionType
+MetricsNetworkObserver::connection_type() const {
+  switch (connection_type_) {
+    case net::NetworkChangeNotifier::CONNECTION_NONE:
+    case net::NetworkChangeNotifier::CONNECTION_UNKNOWN:
+      return SystemProfileProto::Network::CONNECTION_UNKNOWN;
+    case net::NetworkChangeNotifier::CONNECTION_ETHERNET:
+      return SystemProfileProto::Network::CONNECTION_ETHERNET;
+    case net::NetworkChangeNotifier::CONNECTION_WIFI:
+      return SystemProfileProto::Network::CONNECTION_WIFI;
+    case net::NetworkChangeNotifier::CONNECTION_2G:
+      return SystemProfileProto::Network::CONNECTION_2G;
+    case net::NetworkChangeNotifier::CONNECTION_3G:
+      return SystemProfileProto::Network::CONNECTION_3G;
+    case net::NetworkChangeNotifier::CONNECTION_4G:
+      return SystemProfileProto::Network::CONNECTION_4G;
+  }
+  NOTREACHED();
+  return SystemProfileProto::Network::CONNECTION_UNKNOWN;
+}
+
+SystemProfileProto::Network::WifiPHYLayerProtocol
+MetricsNetworkObserver::wifi_phy_layer_protocol() const {
+  switch (wifi_phy_layer_protocol_) {
+    case net::WIFI_PHY_LAYER_PROTOCOL_NONE:
+      return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_NONE;
+    case net::WIFI_PHY_LAYER_PROTOCOL_ANCIENT:
+      return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_ANCIENT;
+    case net::WIFI_PHY_LAYER_PROTOCOL_A:
+      return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_A;
+    case net::WIFI_PHY_LAYER_PROTOCOL_B:
+      return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_B;
+    case net::WIFI_PHY_LAYER_PROTOCOL_G:
+      return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_G;
+    case net::WIFI_PHY_LAYER_PROTOCOL_N:
+      return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_N;
+    case net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN:
+      return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN;
+  }
+  NOTREACHED();
+  return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN;
+}
+
+void MetricsNetworkObserver::ProbeWifiPHYLayerProtocol() {
+  net::WifiPHYLayerProtocol* phy_layer_protocol = new net::WifiPHYLayerProtocol;
+  content::BrowserThread::GetBlockingPool()->PostTaskAndReply(
+      FROM_HERE,
+      base::Bind(&ReadWifiPHYLayerProtocol,
+                 base::Unretained(phy_layer_protocol)),
+      base::Bind(&MetricsNetworkObserver::OnWifiPHYLayerProtocolResult,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 base::Owned(phy_layer_protocol)));
+}
+
+void MetricsNetworkObserver::OnWifiPHYLayerProtocolResult(
+    net::WifiPHYLayerProtocol* mode) {
+  if (wifi_phy_layer_protocol_ != net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN &&
+      *mode != wifi_phy_layer_protocol_) {
+    wifi_phy_layer_protocol_is_ambiguous_ = true;
+  }
+  wifi_phy_layer_protocol_ = *mode;
+}
+