chromeos: Refactor D-Bus client creation for ash and browser processes

chromeos/dbus/dbus_clients_common.h

Index: chromeos/dbus/dbus_clients_common.h
diff --git a/chromeos/dbus/dbus_clients_common.h b/chromeos/dbus/dbus_clients_common.h
new file mode 100644
index 0000000000000000000000000000000000000000..caa6205b614b05dafe4e9cebc62430d10787e4b1
--- /dev/null
+++ b/chromeos/dbus/dbus_clients_common.h
@@ -0,0 +1,79 @@
+// Copyright 2014 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_DBUS_DBUS_CLIENTS_COMMON_H_
+#define CHROMEOS_DBUS_DBUS_CLIENTS_COMMON_H_
+
+#include <memory>
+#include <string>
+
+#include "base/macros.h"
+#include "chromeos/chromeos_export.h"
+#include "chromeos/dbus/dbus_client_types.h"
+
+namespace dbus {
+class Bus;
+}
+
+namespace chromeos {
+
+class CrasAudioClient;
+class CryptohomeClient;
+class PermissionBrokerClient;
+class PowerManagerClient;
+class SessionManagerClient;
+class ShillDeviceClient;
+class ShillIPConfigClient;
+class ShillManagerClient;
+class ShillProfileClient;
+class ShillServiceClient;
+class ShillThirdPartyVpnDriverClient;
+class SystemClockClient;
+class UpdateEngineClient;
+
+// D-Bus clients used in multiple processes (e.g. ash, browser, mus).
+class CHROMEOS_EXPORT DBusClientsCommon {
+ public:
+  // Creates real implementations for |real_client_mask| and fakes for all
+  // others. Fakes are used when running on Linux desktop and in tests.
+  explicit DBusClientsCommon(DBusClientTypeMask real_client_mask);
+  ~DBusClientsCommon();
+
+  // Returns true if |client| has a real (non-fake) client implementation.
+  bool IsUsingReal(DBusClientType client) const;
+
+  // // Returns true if any real DBusClient is used.
+  // bool IsUsingAnyRealClient() const;
+
+  // Initialize proper runtime environment for its dbus clients.
+  void Initialize(dbus::Bus* system_bus);
+
+ private:
+  friend class DBusThreadManager;
+  friend class DBusThreadManagerSetter;
+
+  // Bitmask for clients with real implementations.
+  const DBusClientTypeMask real_client_mask_;
+
+  std::unique_ptr<CrasAudioClient> cras_audio_client_;
+  std::unique_ptr<CryptohomeClient> cryptohome_client_;
+  std::unique_ptr<ShillDeviceClient> shill_device_client_;
+  std::unique_ptr<ShillIPConfigClient> shill_ipconfig_client_;
+  std::unique_ptr<ShillManagerClient> shill_manager_client_;
+  std::unique_ptr<ShillServiceClient> shill_service_client_;
+  std::unique_ptr<ShillProfileClient> shill_profile_client_;
+  std::unique_ptr<ShillThirdPartyVpnDriverClient>
+      shill_third_party_vpn_driver_client_;
+  std::unique_ptr<PermissionBrokerClient> permission_broker_client_;
+  std::unique_ptr<SystemClockClient> system_clock_client_;
+  std::unique_ptr<PowerManagerClient> power_manager_client_;
+  std::unique_ptr<SessionManagerClient> session_manager_client_;
+  std::unique_ptr<UpdateEngineClient> update_engine_client_;
+
+  DISALLOW_COPY_AND_ASSIGN(DBusClientsCommon);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_DBUS_DBUS_CLIENTS_COMMON_H_