Oilpan: Fix compile after r199777.
Oilpan: Fix compile after r199777.

BUG=492204
TBR=haraken@chromium.org, oilpan-reviews@chromium.org

Review URL: https://codereview.chromium.org/1266153002 .

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@199793 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk