Add NetworkChangeNotifier connectivity events to the NetLog.

chrome/browser/io_thread.cc

 // Copyright (c) 2012 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/io_thread.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 226 matching lines @@
   context->set_server_bound_cert_service(
       globals->system_server_bound_cert_service.get());
   context->set_throttler_manager(globals->throttler_manager.get());
   context->set_network_delegate(globals->system_network_delegate.get());
   return context;
 }
 
 }  // namespace
 
 class IOThread::LoggingNetworkChangeObserver
-    : public net::NetworkChangeNotifier::IPAddressObserver {
+    : public net::NetworkChangeNotifier::IPAddressObserver,
+      public net::NetworkChangeNotifier::ConnectionTypeObserver {
  public:
   // |net_log| must remain valid throughout our lifetime.
   explicit LoggingNetworkChangeObserver(net::NetLog* net_log)
       : net_log_(net_log) {
     net::NetworkChangeNotifier::AddIPAddressObserver(this);
+    net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
   }
 
   ~LoggingNetworkChangeObserver() {
     net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
+    net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
   }
 
-  virtual void OnIPAddressChanged() {
+  virtual void OnIPAddressChanged() OVERRIDE {
     VLOG(1) << "Observed a change to the network IP addresses";
 
     net_log_->AddGlobalEntry(net::NetLog::TYPE_NETWORK_IP_ADDRESSES_CHANGED);
   }
 
+  virtual void OnConnectionTypeChanged(
+      net::NetworkChangeNotifier::ConnectionType type) OVERRIDE {
+    std::string type_as_string =
+        net::NetworkChangeNotifier::ConnectionTypeToString(type);
+
+    VLOG(1) << "Observed a change to network connectivity state "
+            << type_as_string;
+
+    net_log_->AddGlobalEntry(
+        net::NetLog::TYPE_NETWORK_CONNECTIVITY_CHANGED,
+        net::NetLog::StringCallback("new_connection_type", &type_as_string));
+  }
+
  private:
   net::NetLog* net_log_;
   DISALLOW_COPY_AND_ASSIGN(LoggingNetworkChangeObserver);
 };
 
 class SystemURLRequestContextGetter : public net::URLRequestContextGetter {
  public:
   explicit SystemURLRequestContextGetter(IOThread* io_thread);
 
   // Implementation for net::UrlRequestContextGetter.
@@ skipping 445 matching lines @@
       new net::HttpNetworkLayer(
           new net::HttpNetworkSession(system_params)));
   globals_->system_ftp_transaction_factory.reset(
       new net::FtpNetworkLayer(globals_->host_resolver.get()));
   globals_->system_request_context.reset(
       ConstructSystemRequestContext(globals_, net_log_));
 
   sdch_manager_->set_sdch_fetcher(
       new SdchDictionaryFetcher(system_url_request_context_getter_.get()));
 }