Oilpan: fix (release) builds after r180088.
Oilpan: fix (release) builds after r180088.

R=haraken
BUG=340522
NOTRY=true

Review URL: https://codereview.chromium.org/469713002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@180149 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs