Update V8 to r5295 as required by WebKit r65615

Change-Id: I1d72d4990703e88b7798919c7a53e12ebf76958a
diff --git a/src/assembler.h b/src/assembler.h
index cf7020e..1577433 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -235,6 +235,7 @@
   INLINE(void set_call_object(Object* target));
   INLINE(Object** call_object_address());
 
+  template<typename StaticVisitor> inline void Visit();
   inline void Visit(ObjectVisitor* v);
 
   // Patch the code with some other code.