[runtime] Remove SharedFunctionInfo::is_function which is the inverse of SFI::is_toplevel

src/debug/debug-evaluate.cc

Index: src/debug/debug-evaluate.cc
diff --git a/src/debug/debug-evaluate.cc b/src/debug/debug-evaluate.cc
index e93b5952c876ad2ffc7ae80579cf7ed08520efbb..3dd02b029d20887e21561dc3341f7d7a040624bd 100644
--- a/src/debug/debug-evaluate.cc
+++ b/src/debug/debug-evaluate.cc
@@ -219,7 +219,7 @@ void DebugEvaluate::ContextBuilder::MaterializeArgumentsObject(
     Handle<JSObject> target, Handle<JSFunction> function) {
   // Do not materialize the arguments object for eval or top-level code.
   // Skip if "arguments" is already taken.
-  if (!function->shared()->is_function()) return;
+  if (function->shared()->is_toplevel()) return;
   Maybe<bool> maybe = JSReceiver::HasOwnProperty(
       target, isolate_->factory()->arguments_string());
   DCHECK(maybe.IsJust());