video_engine_tests_apk: enable running by adding nativeRunTests dependency.

BUG=2462
R=kjellander@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/12579007

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6254 4adac7df-926f-26a2-2b94-8c16560cd09d