Remove CallTest dependency on voice_engine/test/.

Loading file out of resources/ instead of data/ which is deprecated.

BUG=
R=holmer@google.com, mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/5069004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5226 4adac7df-926f-26a2-2b94-8c16560cd09d
3 files changed