Implement new network change notifier that uses NetworkStateHandler

This implements the new network change notifier that informs the Chrome
network stack of connectivity changes.

It's currently behind the --enable-new-network-handlers command line flag.

BUG=chromium-os:159647
TEST=unit tests, gmerged on a device and ensured offline->online and
     online->offline transitions are correctly detected.


Review URL: https://chromiumcodereview.appspot.com/11469044

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@174127 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 83 insertions, 0 deletions

diff --git a/chromeos/network/network_change_notifier_chromeos.h b/chromeos/network/network_change_notifier_chromeos.h
new file mode 100644
index 0000000..58ecde3
--- /dev/null
+++ b/chromeos/network/network_change_notifier_chromeos.h
@@ -0,0 +1,83 @@
+// 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.
+
+#ifndef CHROMEOS_NETWORK_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_
+#define CHROMEOS_NETWORK_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/gtest_prod_util.h"
+#include "base/memory/scoped_ptr.h"
+#include "chromeos/chromeos_export.h"
+#include "chromeos/network/network_state_handler_observer.h"
+#include "net/base/network_change_notifier.h"
+
+namespace chromeos {
+
+class CHROMEOS_EXPORT NetworkChangeNotifierChromeos
+    : public net::NetworkChangeNotifier,
+      public chromeos::NetworkStateHandlerObserver {
+ public:
+  NetworkChangeNotifierChromeos();
+  virtual ~NetworkChangeNotifierChromeos();
+
+  // Starts observing changes from the network state handler.
+  void Initialize();
+
+  // Stops observing changes from the network state handler.
+  void Shutdown();
+
+  // NetworkChangeNotifier overrides.
+  net::NetworkChangeNotifier::ConnectionType
+      GetCurrentConnectionType() const OVERRIDE;
+
+  // NetworkStateHandlerObserver overrides.
+  void ActiveNetworkChanged(
+      const chromeos::NetworkState* active_network) OVERRIDE;
+  void ActiveNetworkStateChanged(
+      const chromeos::NetworkState* active_network) OVERRIDE;
+
+ private:
+  FRIEND_TEST_ALL_PREFIXES(NetworkChangeNotifierChromeosTest,
+                           ConnectionTypeFromShill);
+  friend class NetworkChangeNotifierChromeosUpdateTest;
+
+  class DnsConfigService;
+
+  // Updates the notifier state based on an active network update.
+  // |connection_type_changed| is set to true if we must report a connection
+  // type change.
+  // |ip_address_changed| is set to true if we must report an IP address change.
+  // |dns_changed| is set to true if we must report a DNS config change.
+  void UpdateState(const chromeos::NetworkState* active_network,
+                   bool* connection_type_changed,
+                   bool* ip_address_changed,
+                   bool* dns_changed);
+
+  // Maps the shill network type and technology to its NetworkChangeNotifier
+  // equivalent.
+  static net::NetworkChangeNotifier::ConnectionType
+      ConnectionTypeFromShill(const std::string& type,
+                              const std::string& technology);
+
+  // Calculates parameters used for network change notifier online/offline
+  // signals.
+  static net::NetworkChangeNotifier::NetworkChangeCalculatorParams
+      NetworkChangeCalculatorParamsChromeos();
+
+  NetworkChangeNotifier::ConnectionType connection_type_;
+  // IP address for the current active network.
+  std::string ip_address_;
+  // Service path for the current active network.
+  std::string service_path_;
+
+  scoped_ptr<DnsConfigService> dns_config_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierChromeos);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_NETWORK_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_