Support DDC debugging tools.

test/dartdevc/build_test.dart

 // Copyright (c) 2017, 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.
 
 import 'package:pub/src/compiler.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 
@@ skipping 51 matching lines @@
         output: new RegExp(r'Built [\d]+ files to "build".'));
 
     d.dir(appPath, [
       d.dir('build', [
         d.dir('web', [
           d.matcherFile('main.dart.js', isNot(isEmpty)),
           d.matcherFile('main.dart.bootstrap.js', isNot(isEmpty)),
           d.matcherFile('dart_sdk.js', isNot(isEmpty)),
           d.matcherFile('require.js', isNot(isEmpty)),
           d.matcherFile('web__main.js', isNot(isEmpty)),
+          d.matcherFile('dart_stack_trace_mapper.js', isNot(isEmpty)),
+          d.matcherFile('ddc_web_compiler.js', isNot(isEmpty)),
           d.dir('packages', [
             d.dir('foo', [d.matcherFile('lib__foo.js', isNot(isEmpty))]),
             d.dir(appPath, [d.matcherFile('lib__hello.js', isNot(isEmpty))]),
           ]),
           d.matcherFile('web__subdir__subfile.js', isNot(isEmpty)),
           d.dir('subdir', [
             d.matcherFile('subfile.dart.js', isNot(isEmpty)),
             d.matcherFile(
                 'subfile.dart.bootstrap.js',
                 allOf(
                   contains('"web/web__main": '
                       '"../web__main"'),
                   contains(
                       '"packages/foo/lib__foo": "../packages/foo/lib__foo"'),
                 )),
             d.matcherFile('dart_sdk.js', isNot(isEmpty)),
             d.matcherFile('require.js', isNot(isEmpty)),
+            d.matcherFile('dart_stack_trace_mapper.js', isNot(isEmpty)),
+            d.matcherFile('ddc_web_compiler.js', isNot(isEmpty)),
           ]),
         ]),
       ]),
     ]).validate();
   });
 }