Check in codegen test expectations.

test/codegen/expect/language/mixin_type_parameter6_test.js

Index: test/codegen/expect/language/mixin_type_parameter6_test.js
diff --git a/test/codegen/expect/language/mixin_type_parameter6_test.js b/test/codegen/expect/language/mixin_type_parameter6_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..5062d0177e8b73fd048007ed4daec14bf9082f80
--- /dev/null
+++ b/test/codegen/expect/language/mixin_type_parameter6_test.js
@@ -0,0 +1,44 @@
+dart_library.library('language/mixin_type_parameter6_test', null, /* Imports */[
+  'dart_sdk'
+], function load__mixin_type_parameter6_test(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const _interceptors = dart_sdk._interceptors;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const mixin_type_parameter6_test = Object.create(null);
+  let A = () => (A = dart.constFn(mixin_type_parameter6_test.A$()))();
+  let B = () => (B = dart.constFn(mixin_type_parameter6_test.B$()))();
+  let JSArrayOfString = () => (JSArrayOfString = dart.constFn(_interceptors.JSArray$(core.String)))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  mixin_type_parameter6_test.A$ = dart.generic(T => {
+    class A extends core.Object {}
+    dart.addTypeTests(A);
+    return A;
+  });
+  mixin_type_parameter6_test.A = A();
+  mixin_type_parameter6_test.B$ = dart.generic(S => {
+    class B extends core.Object {
+      foo(s) {
+        S._check(s);
+        return null;
+      }
+    }
+    dart.addTypeTests(B);
+    dart.setSignature(B, {
+      methods: () => ({foo: dart.definiteFunctionType(core.int, [S])})
+    });
+    return B;
+  });
+  mixin_type_parameter6_test.B = B();
+  mixin_type_parameter6_test.C = class C extends dart.mixin(mixin_type_parameter6_test.A$(core.int), mixin_type_parameter6_test.B$(core.String)) {};
+  dart.addSimpleTypeTests(mixin_type_parameter6_test.C);
+  mixin_type_parameter6_test.main = function() {
+    let list = JSArrayOfString().of(['foo']);
+    let c = new mixin_type_parameter6_test.C();
+    list[dartx.map](core.int)(dart.bind(c, 'foo'));
+  };
+  dart.fn(mixin_type_parameter6_test.main, VoidTodynamic());
+  // Exports:
+  exports.mixin_type_parameter6_test = mixin_type_parameter6_test;
+});