Modify a FilesystemCopierAction unit test.

* Reverse previous changes, which proved impotent in solving an
  intermittent test failure.

* Disabled the failing test.

BUG=chromium-os:31082
TEST=Builds and runs unit tests

Change-Id: Ib7b3552e98ca40b6141688e2dea5a1407db12b2a
Reviewed-on: https://gerrit.chromium.org/gerrit/27910
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Commit-Ready: Gilad Arnold <garnold@chromium.org>
Tested-by: Gilad Arnold <garnold@chromium.org>
diff --git a/update_attempter.cc b/update_attempter.cc
index 93c3c1f..8dd4622 100644
--- a/update_attempter.cc
+++ b/update_attempter.cc
@@ -377,9 +377,9 @@
   shared_ptr<OmahaResponseHandlerAction> response_handler_action(
       new OmahaResponseHandlerAction(prefs_));
   shared_ptr<FilesystemCopierAction> filesystem_copier_action(
-      new FilesystemCopierAction(false, false, 0));
+      new FilesystemCopierAction(false, false));
   shared_ptr<FilesystemCopierAction> kernel_filesystem_copier_action(
-      new FilesystemCopierAction(true, false, 0));
+      new FilesystemCopierAction(true, false));
   shared_ptr<OmahaRequestAction> download_started_action(
       new OmahaRequestAction(prefs_,
                              &omaha_request_params_,
@@ -406,9 +406,9 @@
                                                     is_test_mode_),
                              false));
   shared_ptr<FilesystemCopierAction> filesystem_verifier_action(
-      new FilesystemCopierAction(false, true, 0));
+      new FilesystemCopierAction(false, true));
   shared_ptr<FilesystemCopierAction> kernel_filesystem_verifier_action(
-      new FilesystemCopierAction(true, true, 0));
+      new FilesystemCopierAction(true, true));
   shared_ptr<PostinstallRunnerAction> postinstall_runner_action(
       new PostinstallRunnerAction);
   shared_ptr<OmahaRequestAction> update_complete_action(