move utils/Pipe.h to the simulator
diff --git a/simulator/app/MessageStream.h b/simulator/app/MessageStream.h
index de9c398..82a9b4c 100644
--- a/simulator/app/MessageStream.h
+++ b/simulator/app/MessageStream.h
@@ -17,7 +17,7 @@
 #error DO NOT USE THIS FILE IN THE DEVICE BUILD
 #endif
 
-#include <utils/Pipe.h>
+#include "Pipe.h"
 #include <stdlib.h>
 #include <cutils/uio.h>