Fix build failure for ENABLE(ORIENTATION_EVENTS)
Fix build failure for ENABLE(ORIENTATION_EVENTS)

R=falken@chromium.org
TBR=falken
BUG=none

Review URL: https://codereview.chromium.org/50283003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@160796 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