Include files from webrtc/.. paths in voice_engine/

BUG=1662
R=henrikg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1434005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4079 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/voice_engine/statistics.cc b/voice_engine/statistics.cc
index 49861e0..0c2b468 100644
--- a/voice_engine/statistics.cc
+++ b/voice_engine/statistics.cc
@@ -11,10 +11,10 @@
 #include <cassert>
 #include <stdio.h>
 
-#include "statistics.h"
+#include "webrtc/voice_engine/statistics.h"
 
-#include "trace.h"
-#include "critical_section_wrapper.h"
+#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
+#include "webrtc/system_wrappers/interface/trace.h"
 
 namespace webrtc {