Fix clobbered build issue.

TBR=jochen@chromium.org
NOTRY=true
BUG=269698

Review URL: https://chromiumcodereview.appspot.com/22425005

git-svn-id: svn://svn.chromium.org/blink/trunk@155711 bbb929c8-8fbe-4397-9dbb-9b2b20218538