dump_obu: fix includes.

Change-Id: Ib930350a647cc919f5e806398fb70958c30f9e83
diff --git a/tools/dump_obu.cc b/tools/dump_obu.cc
index 69e39c7..fe503cc 100644
--- a/tools/dump_obu.cc
+++ b/tools/dump_obu.cc
@@ -17,11 +17,11 @@
 
 #include "config/aom_config.h"
 
-#include "./ivfdec.h"
-#include "./obudec.h"
+#include "common/ivfdec.h"
+#include "common/obudec.h"
+#include "common/tools_common.h"
+#include "common/webmdec.h"
 #include "tools/obu_parser.h"
-#include "./tools_common.h"
-#include "./webmdec.h"
 
 namespace {