Check in codegen test expectations.

test/codegen/expect/language/async_or_generator_return_type_stacktrace_test_none_multi.js

Index: test/codegen/expect/language/async_or_generator_return_type_stacktrace_test_none_multi.js
diff --git a/test/codegen/expect/language/async_or_generator_return_type_stacktrace_test_none_multi.js b/test/codegen/expect/language/async_or_generator_return_type_stacktrace_test_none_multi.js
new file mode 100644
index 0000000000000000000000000000000000000000..951101961eac3a6ae025b12b86d7ab53310bd9c9
--- /dev/null
+++ b/test/codegen/expect/language/async_or_generator_return_type_stacktrace_test_none_multi.js
@@ -0,0 +1,38 @@
+dart_library.library('language/async_or_generator_return_type_stacktrace_test_none_multi', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__async_or_generator_return_type_stacktrace_test_none_multi(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const async_or_generator_return_type_stacktrace_test_none_multi = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  async_or_generator_return_type_stacktrace_test_none_multi.main = function() {
+    try {
+    } catch (e) {
+      let st = dart.stackTrace(e);
+      expect$.Expect.isTrue(core.TypeError.is(e), "wrong exception type");
+      expect$.Expect.isTrue(st.toString()[dartx.contains]("badReturnTypeAsync"), "missing frame");
+    }
+
+    try {
+    } catch (e) {
+      let st = dart.stackTrace(e);
+      expect$.Expect.isTrue(core.TypeError.is(e), "wrong exception type");
+      expect$.Expect.isTrue(st.toString()[dartx.contains]("badReturnTypeAsyncStar"), "missing frame");
+    }
+
+    try {
+    } catch (e) {
+      let st = dart.stackTrace(e);
+      expect$.Expect.isTrue(core.TypeError.is(e), "wrong exception type");
+      expect$.Expect.isTrue(st.toString()[dartx.contains]("badReturnTypeSyncStar"), "missing frame");
+    }
+
+  };
+  dart.fn(async_or_generator_return_type_stacktrace_test_none_multi.main, VoidTodynamic());
+  // Exports:
+  exports.async_or_generator_return_type_stacktrace_test_none_multi = async_or_generator_return_type_stacktrace_test_none_multi;
+});