Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

pkg/analyzer/test/generated/checked_mode_compile_time_error_code_test.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.test.generated.checked_mode_compile_time_error_code_test;
 
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/source_io.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../reflective_tests.dart';
 import '../utils.dart';
 import 'resolver_test_case.dart';
 
 main() {
   initializeTestEnvironment();
-  runReflectiveTests(CheckedModeCompileTimeErrorCodeTest);
+  defineReflectiveTests(CheckedModeCompileTimeErrorCodeTest);
 }
 
 @reflectiveTest
 class CheckedModeCompileTimeErrorCodeTest extends ResolverTestCase {
   void test_fieldFormalParameterAssignableToField_extends() {
     // According to checked-mode type checking rules, a value of type B is
     // assignable to a field of type A, because B extends A (and hence is a
     // subtype of A).
     Source source = addSource(r'''
 class A {
@@ skipping 583 matching lines @@
   void test_topLevelVarNotAssignable_undefined() {
     Source source = addSource("const Unresolved x = 'foo';");
     computeLibrarySourceErrors(source);
     assertErrors(source, [
       CheckedModeCompileTimeErrorCode.VARIABLE_TYPE_MISMATCH,
       StaticWarningCode.UNDEFINED_CLASS
     ]);
     verify([source]);
   }
 }