Revert "Oilpan: fix for r173953."

Speculative revert to fix SyncErrorNotifierTest.PassphraseNotification.
This reverts commit r173971. See bug for details.

BUG=372973
TBR=zerny@chromium.org

Review URL: https://codereview.chromium.org/280973002

git-svn-id: svn://svn.chromium.org/blink/trunk@173991 bbb929c8-8fbe-4397-9dbb-9b2b20218538