Merge V8 5.3.332.45.  DO NOT MERGE

Test: Manual

FPIIM-449

Change-Id: Id3254828b068abdea3cb10442e0172a8c9a98e03
(cherry picked from commit 13e2dadd00298019ed862f2b2fc5068bba730bcf)
diff --git a/src/heap/mark-compact-inl.h b/src/heap/mark-compact-inl.h
index 455f443..8ecdd62 100644
--- a/src/heap/mark-compact-inl.h
+++ b/src/heap/mark-compact-inl.h
@@ -79,7 +79,7 @@
 
 void CodeFlusher::AddCandidate(JSFunction* function) {
   DCHECK(function->code() == function->shared()->code());
-  if (function->next_function_link()->IsUndefined()) {
+  if (function->next_function_link()->IsUndefined(isolate_)) {
     SetNextCandidate(function, jsfunction_candidates_head_);
     jsfunction_candidates_head_ = function;
   }
@@ -105,7 +105,7 @@
 
 
 void CodeFlusher::ClearNextCandidate(JSFunction* candidate, Object* undefined) {
-  DCHECK(undefined->IsUndefined());
+  DCHECK(undefined->IsUndefined(candidate->GetIsolate()));
   candidate->set_next_function_link(undefined, SKIP_WRITE_BARRIER);
 }