[debugger] step-next across yield should not leave the generator.

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 f6a020f042d59f4b6aa010b59996b54f85fe90b7..f485cba262aa56ab1593ec7c3e79cd668595c08e 100644
--- a/src/runtime/runtime-debug.cc
+++ b/src/runtime/runtime-debug.cc
@@ -1872,12 +1872,12 @@ RUNTIME_FUNCTION(Runtime_DebugPrepareStepInSuspendedGenerator) {
   return isolate->heap()->undefined_value();
 }
 
-RUNTIME_FUNCTION(Runtime_DebugRecordAsyncFunction) {
+RUNTIME_FUNCTION(Runtime_DebugRecordGenerator) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
   CHECK(isolate->debug()->last_step_action() >= StepNext);
-  isolate->debug()->RecordAsyncFunction(generator);
+  isolate->debug()->RecordGenerator(generator);
   return isolate->heap()->undefined_value();
 }