Merge changes I40575081,I1ca8f8cf,I38bfd273 am: 1c6a56b27f
am: e6c7dffaa8

Change-Id: I2de88cca316040df8dcdcfbce237a9e4350f26bc
diff --git a/Utils.cpp b/Utils.cpp
index df50658..1616d80 100644
--- a/Utils.cpp
+++ b/Utils.cpp
@@ -43,6 +43,7 @@
 #include <sys/sysmacros.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <unistd.h>
 
 #include <list>
 #include <mutex>