Check in codegen test expectations.

test/codegen/expect/language/regress_22976_test_02_multi.js

+dart_library.library('language/regress_22976_test_02_multi', null, /* Imports */[
+  'dart_sdk'
+], function load__regress_22976_test_02_multi(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const regress_22976_test_02_multi = Object.create(null);
+  let A = () => (A = dart.constFn(regress_22976_test_02_multi.A$()))();
+  let B = () => (B = dart.constFn(regress_22976_test_02_multi.B$()))();
+  let C = () => (C = dart.constFn(regress_22976_test_02_multi.C$()))();
+  let COfString$int = () => (COfString$int = dart.constFn(regress_22976_test_02_multi.C$(core.String, core.int)))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  regress_22976_test_02_multi.A$ = dart.generic(T => {
+    class A extends core.Object {}
+    dart.addTypeTests(A);
+    return A;
+  });
+  regress_22976_test_02_multi.A = A();
+  regress_22976_test_02_multi.B$ = dart.generic(T => {
+    let AOfT = () => (AOfT = dart.constFn(regress_22976_test_02_multi.A$(T)))();
+    class B extends core.Object {}
+    dart.addTypeTests(B);
+    B[dart.implements] = () => [AOfT()];
+    return B;
+  });
+  regress_22976_test_02_multi.B = B();
+  regress_22976_test_02_multi.C$ = dart.generic((S, T) => {
+    let BOfS = () => (BOfS = dart.constFn(regress_22976_test_02_multi.B$(S)))();
+    let AOfT = () => (AOfT = dart.constFn(regress_22976_test_02_multi.A$(T)))();
+    class C extends core.Object {}
+    dart.addTypeTests(C);
+    C[dart.implements] = () => [BOfS(), AOfT()];
+    return C;
+  });
+  regress_22976_test_02_multi.C = C();
+  regress_22976_test_02_multi.main = function() {
+    let a1 = new (COfString$int())();
+  };
+  dart.fn(regress_22976_test_02_multi.main, VoidTodynamic());
+  // Exports:
+  exports.regress_22976_test_02_multi = regress_22976_test_02_multi;
+});