[V8] Use Function.name in Error.stack

src/runtime/runtime-debug.cc

Index: src/runtime/runtime-debug.cc
diff --git a/src/runtime/runtime-debug.cc b/src/runtime/runtime-debug.cc
index 1856396094fadd005c80c0fdffe1fa8074a43c5f..42e60127b8b18dce3fd9f3ee4f81dfae16d762d7 100644
--- a/src/runtime/runtime-debug.cc
+++ b/src/runtime/runtime-debug.cc
@@ -2613,6 +2613,15 @@ RUNTIME_FUNCTION(Runtime_FunctionGetInferredName) {
 }
 
 
+RUNTIME_FUNCTION(Runtime_FunctionGetDebugName) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 1);
+
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, f, 0);
+  return *JSFunction::GetDebugName(f);
+}
+
+
 // A testing entry. Returns statement position which is the closest to
 // source_position.
 RUNTIME_FUNCTION(Runtime_GetFunctionCodePositionFromSource) {