Do not make heap iterable eagerly.

src/liveedit.cc

Index: src/liveedit.cc
diff --git a/src/liveedit.cc b/src/liveedit.cc
index bbec2789816580902c491fb9f765015a358e6d08..d802d0dd9d88978bcfaa56f696a660e2291ea12d 100644
--- a/src/liveedit.cc
+++ b/src/liveedit.cc
@@ -1188,8 +1188,6 @@ void LiveEdit::ReplaceFunctionCode(
 
   Handle<SharedFunctionInfo> shared_info = shared_info_wrapper.GetInfo();
 
-  isolate->heap()->MakeHeapIterable();
-
   if (IsJSFunctionCode(shared_info->code())) {
     Handle<Code> code = compile_info_wrapper.GetFunctionCode();
     ReplaceCodeObject(Handle<Code>(shared_info->code()), code);
@@ -1425,8 +1423,6 @@ void LiveEdit::PatchFunctionPositions(Handle<JSArray> shared_info_array,
   info->set_end_position(new_function_end);
   info->set_function_token_position(new_function_token_pos);
 
-  info->GetIsolate()->heap()->MakeHeapIterable();
-
   if (IsJSFunctionCode(info->code())) {
     // Patch relocation info section of the code.
     Handle<Code> patched_code = PatchPositionsInCode(Handle<Code>(info->code()),