Reland "Keep a canonical list of shared function infos."

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 666363996924135e6583010a2ace9721271daea6..8c7e9914a29f9af9326348ed370cd69d5358c87b 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -983,6 +983,7 @@ void Script::ScriptPrint(std::ostream& os) {  // NOLINT
   os << "\n - eval from shared: " << Brief(eval_from_shared());
   os << "\n - eval from instructions offset: "
      << Brief(eval_from_instructions_offset());
+  os << "\n - shared function infos: " << Brief(shared_function_infos());
   os << "\n";
 }