dbus: Provide LivenessService.CheckLiveness

chromeos/dbus/services/liveness_service_provider.h

Index: chromeos/dbus/services/liveness_service_provider.h
diff --git a/chromeos/dbus/services/liveness_service_provider.h b/chromeos/dbus/services/liveness_service_provider.h
index 75092a3d73d79a1e6b1126a7c4a1c4a03179c8c9..19728440bd11028b80437ae0e98b1371f77b90d6 100644
--- a/chromeos/dbus/services/liveness_service_provider.h
+++ b/chromeos/dbus/services/liveness_service_provider.h
@@ -36,7 +36,7 @@ namespace chromeos {
 class CHROMEOS_EXPORT LivenessServiceProvider
     : public CrosDBusService::ServiceProviderInterface {
  public:
-  LivenessServiceProvider();
+  explicit LivenessServiceProvider(const std::string& service_interface);
   ~LivenessServiceProvider() override;
 
   // CrosDBusService::ServiceProviderInterface overrides:
@@ -53,6 +53,11 @@ class CHROMEOS_EXPORT LivenessServiceProvider
   void CheckLiveness(dbus::MethodCall* method_call,
                      dbus::ExportedObject::ResponseSender response_sender);
 
+  // Name of the service interface to install LivenessService on.
+  // TODO(teravest): Remove this once CheckLiveness is removed from
+  // LibCrosService.
+  const std::string service_interface_;
+
   // Keep this last so that all weak pointers will be invalidated at the
   // beginning of destruction.
   base::WeakPtrFactory<LivenessServiceProvider> weak_ptr_factory_;