Check in codegen test expectations.

test/codegen/expect/language/library_same_name_used_test.js

+dart_library.library('language/library_same_name_used_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__library_same_name_used_test(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 library_same_name_used_test = Object.create(null);
+  const library_same_name_used_lib1 = Object.create(null);
+  const library_same_name_used_lib2 = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let VoidToX = () => (VoidToX = dart.constFn(dart.definiteFunctionType(library_same_name_used_lib1.X, [])))();
+  library_same_name_used_test.main = function() {
+    let x = library_same_name_used_lib1.makeX();
+    expect$.Expect.equals('lib2.X', dart.str`${x}`);
+  };
+  dart.fn(library_same_name_used_test.main, VoidTodynamic());
+  library_same_name_used_lib1.X = class X extends core.Object {};
+  library_same_name_used_lib1.makeX = function() {
+    return new library_same_name_used_lib2.X();
+  };
+  dart.fn(library_same_name_used_lib1.makeX, VoidToX());
+  library_same_name_used_lib2.X = class X extends core.Object {
+    new() {
+    }
+    toString() {
+      return 'lib2.X';
+    }
+  };
+  library_same_name_used_lib2.X[dart.implements] = () => [library_same_name_used_lib1.X];
+  dart.setSignature(library_same_name_used_lib2.X, {
+    constructors: () => ({new: dart.definiteFunctionType(library_same_name_used_lib2.X, [])})
+  });
+  // Exports:
+  exports.library_same_name_used_test = library_same_name_used_test;
+  exports.library_same_name_used_lib1 = library_same_name_used_lib1;
+  exports.library_same_name_used_lib2 = library_same_name_used_lib2;
+});