Fix build failure

There was a build failure due to including checks.h. Removed the include.
TBR=kwiberg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/48639004

Cr-Commit-Position: refs/heads/master@{#8825}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8825 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed