Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE

This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.

FPIIM-449

Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/src/vm-state.h b/src/vm-state.h
index 7e723a5..3f8d381 100644
--- a/src/vm-state.h
+++ b/src/vm-state.h
@@ -6,6 +6,7 @@
 #define V8_VM_STATE_H_
 
 #include "src/allocation.h"
+#include "src/counters.h"
 #include "src/isolate.h"
 
 namespace v8 {
@@ -48,6 +49,7 @@
   Isolate* isolate_;
   Address callback_;
   ExternalCallbackScope* previous_scope_;
+  RuntimeCallTimer timer_;
 #ifdef USE_SIMULATOR
   Address scope_address_;
 #endif