dbus: remove service name from ExportedObject

dbus/exported_object.cc

Index: dbus/exported_object.cc
diff --git a/dbus/exported_object.cc b/dbus/exported_object.cc
index 730c98b2ee7634fd8cbf9f4595d03a5872e7892a..7c4bada3bbcff3c38b796e84ca608df1e224928e 100644
--- a/dbus/exported_object.cc
+++ b/dbus/exported_object.cc
@@ -35,10 +35,8 @@ std::string GetAbsoluteMethodName(
 }  // namespace
 
 ExportedObject::ExportedObject(Bus* bus,
-                               const std::string& service_name,
                                const ObjectPath& object_path)
     : bus_(bus),
-      service_name_(service_name),
       object_path_(object_path),
       object_is_registered_(false) {
 }
@@ -65,8 +63,6 @@ bool ExportedObject::ExportMethodAndBlock(
     return false;
   if (!bus_->SetUpAsyncOperations())
     return false;
-  if (!bus_->RequestOwnership(service_name_))
-    return false;
   if (!Register())
     return false;