Remove GetStackTraceLine

src/execution.cc

Index: src/execution.cc
diff --git a/src/execution.cc b/src/execution.cc
index 85a73cd6676c5711bcaacdc81933efb90cbbf959..48b92ffd2856b6b593924a928c64d74dcd6ad2de 100644
--- a/src/execution.cc
+++ b/src/execution.cc
@@ -431,16 +431,26 @@ Handle<String> Execution::GetStackTraceLine(Handle<Object> recv,
                                             Handle<Object> pos,
                                             Handle<Object> is_global) {
   Isolate* isolate = fun->GetIsolate();
-  Handle<Object> args[] = { recv, fun, pos, is_global };
-  MaybeHandle<Object> maybe_result =
-      TryCall(isolate, isolate->get_stack_trace_line_fun(),
-              isolate->factory()->undefined_value(), arraysize(args), args);
-  Handle<Object> result;
-  if (!maybe_result.ToHandle(&result) || !result->IsString()) {
+
+  Handle<JSFunction> ctor =
+      handle(isolate->native_context()->callsite_function(), isolate);
+  Handle<Object> strict_mode = isolate->factory()->ToBoolean(false);
+
+  MaybeHandle<Object> maybe_callsite = CallSiteUtils::Construct(
+      isolate, ctor, ctor, recv, fun, pos, strict_mode);
+  if (maybe_callsite.is_null()) {
+    isolate->clear_pending_exception();
+    return isolate->factory()->empty_string();
+  }
+
+  MaybeHandle<String> maybe_to_string =
+      CallSiteUtils::ToString(isolate, maybe_callsite.ToHandleChecked());
+  if (maybe_to_string.is_null()) {
+    isolate->clear_pending_exception();
     return isolate->factory()->empty_string();
   }
 
-  return Handle<String>::cast(result);
+  return maybe_to_string.ToHandleChecked();
 }