Add file missing from last commit

TBR=ager@chromium.org
Review URL: http://codereview.chromium.org/6715026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7304 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/safepoint-table.h

@@ -29,6 +29,7 @@
 #define V8_SAFEPOINT_TABLE_H_
 
 #include "heap.h"
+#include "v8memory.h"
 #include "zone.h"
 
 namespace v8 {