Serializing display lists

This is a WIP prototype

Change-Id: Id4bfcf2b7bf905221c3734b7b6887c9b2efd37e6
diff --git a/libs/hwui/tests/main.cpp b/libs/hwui/tests/main.cpp
index 483fb35..0bbf08c 100644
--- a/libs/hwui/tests/main.cpp
+++ b/libs/hwui/tests/main.cpp
@@ -26,6 +26,8 @@
 
 #include "TestContext.h"
 
+#include "protos/hwui.pb.h"
+
 #include <stdio.h>
 #include <unistd.h>