Added a Isolate* parameter to Serializer::enabled().

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index 8438e077695296877fde93d70990ca7969b89e17..7a88e70827271bf97de9c88c90ea3e09f560b892 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -2703,7 +2703,7 @@ void Assembler::RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data) {
   ASSERT(!RelocInfo::IsNone(rmode));
   // Don't record external references unless the heap will be serialized.
   if (rmode == RelocInfo::EXTERNAL_REFERENCE) {
-    if (!Serializer::enabled() && !emit_debug_code()) {
+    if (!Serializer::enabled(isolate()) && !emit_debug_code()) {
       return;
     }
   }