Fix ChromeOS build (C99 break)

BUG=5016
TBR=henrik.lundin@webrtc.org

Review URL: https://codereview.webrtc.org/1354163002

Cr-Original-Commit-Position: refs/heads/master@{#9992}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 2803a40fe335a29f9584911d1a52856bdb302df7
1 file changed