Reland of "Store SharedFunctionInfos of a Script in a FixedArray indexed by their ID"

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 95cbc0abc7f59a34f25410c26c2f1e2ba384279e..8b08b426d3985fe83bb6c68047cc0500b366a6b0 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -167,7 +167,6 @@ Handle<FixedArray> Factory::NewFixedArrayWithHoles(int size,
       FixedArray);
 }
 
-
 Handle<FixedArray> Factory::NewUninitializedFixedArray(int size) {
   CALL_HEAP_FUNCTION(
       isolate(),
@@ -1058,7 +1057,7 @@ Handle<Script> Factory::NewScript(Handle<String> source) {
   script->set_line_ends(heap->undefined_value());
   script->set_eval_from_shared(heap->undefined_value());
   script->set_eval_from_position(0);
-  script->set_shared_function_infos(Smi::kZero);
+  script->set_shared_function_infos(*empty_fixed_array(), SKIP_WRITE_BARRIER);
   script->set_flags(0);
 
   heap->set_script_list(*WeakFixedArray::Add(script_list(), script));