Check in codegen test expectations.

test/codegen/expect/language/duplicate_import_prefix_test.js

Index: test/codegen/expect/language/duplicate_import_prefix_test.js
diff --git a/test/codegen/expect/language/duplicate_import_prefix_test.js b/test/codegen/expect/language/duplicate_import_prefix_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..6c44640821b922e0e13626f6990f3da8ac5ad615
--- /dev/null
+++ b/test/codegen/expect/language/duplicate_import_prefix_test.js
@@ -0,0 +1,33 @@
+dart_library.library('language/duplicate_import_prefix_test', null, /* Imports */[
+  'dart_sdk'
+], function load__duplicate_import_prefix_test(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const duplicate_import_prefix_test = Object.create(null);
+  const duplicate_import_liba = Object.create(null);
+  const duplicate_import_libb = Object.create(null);
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  duplicate_import_prefix_test.main = function() {
+  };
+  dart.fn(duplicate_import_prefix_test.main, VoidTovoid());
+  duplicate_import_liba.field = null;
+  duplicate_import_liba.method = function() {
+  };
+  dart.fn(duplicate_import_liba.method, VoidTovoid());
+  duplicate_import_liba.Class = class Class extends core.Object {};
+  duplicate_import_liba.methodOrClass = function() {
+  };
+  dart.fn(duplicate_import_liba.methodOrClass, VoidTovoid());
+  duplicate_import_libb.field = null;
+  duplicate_import_libb.method = function() {
+  };
+  dart.fn(duplicate_import_libb.method, VoidTovoid());
+  duplicate_import_libb.Class = class Class extends core.Object {};
+  duplicate_import_libb.methodOrClass = class methodOrClass extends core.Object {};
+  // Exports:
+  exports.duplicate_import_prefix_test = duplicate_import_prefix_test;
+  exports.duplicate_import_liba = duplicate_import_liba;
+  exports.duplicate_import_libb = duplicate_import_libb;
+});