Update V8 to r5716 as required by WebKit r70949

Change-Id: I0d5cd05bb0427af33e5c9f6efdc209366a32bde3
diff --git a/src/x64/simulator-x64.h b/src/x64/simulator-x64.h
index a0fc3cb..e607c8b 100644
--- a/src/x64/simulator-x64.h
+++ b/src/x64/simulator-x64.h
@@ -30,11 +30,22 @@
 
 #include "allocation.h"
 
-// Since there is no simulator for the ia32 architecture the only thing we can
+namespace v8 {
+namespace internal {
+
+// Since there is no simulator for the x64 architecture the only thing we can
 // do is to call the entry directly.
 // TODO(X64): Don't pass p0, since it isn't used?
 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
-  entry(p0, p1, p2, p3, p4);
+  (entry(p0, p1, p2, p3, p4))
+
+// Call the generated regexp code directly. The entry function pointer should
+// expect seven int/pointer sized arguments and return an int.
+#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \
+  (entry(p0, p1, p2, p3, p4, p5, p6))
+
+#define TRY_CATCH_FROM_ADDRESS(try_catch_address) \
+  (reinterpret_cast<TryCatch*>(try_catch_address))
 
 // The stack limit beyond which we will throw stack overflow errors in
 // generated code. Because generated code on x64 uses the C stack, we
@@ -52,12 +63,6 @@
   static inline void UnregisterCTryCatch() { }
 };
 
-// Call the generated regexp code directly. The entry function pointer should
-// expect eight int/pointer sized arguments and return an int.
-#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \
-  entry(p0, p1, p2, p3, p4, p5, p6)
-
-#define TRY_CATCH_FROM_ADDRESS(try_catch_address) \
-  reinterpret_cast<TryCatch*>(try_catch_address)
+} }  // namespace v8::internal
 
 #endif  // V8_X64_SIMULATOR_X64_H_