video coding: updating offline tests.

Additional clean-up to the offline test: Placing test callbacks in a designated file. 
Review URL: http://webrtc-codereview.appspot.com/167002

git-svn-id: http://webrtc.googlecode.com/svn/trunk@642 4adac7df-926f-26a2-2b94-8c16560cd09d

src/modules/video_coding/main/test/quality_modes_test.cc

@@ -15,6 +15,7 @@
 #include <time.h>
 
 #include "../source/event.h"
+#include "test_callbacks.h"
 #include "test_macros.h"
 #include "video_metrics.h"
 #include "vplib.h"