test rename overhaul: step 3 _tests.dart => _test.dart

lib/compiler/implementation/scanner/source_list.dart

 // Copyright (c) 2012, 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.
 
 final List<String> argv = const <String>[
 '../lib/dom/common/implementation.dart',
 '../lib/dom/common/public.dart',
 '../lib/dom/dom.dart',
 '../lib/dom/scripts/idlparser.dart',
 '../lib/dom/scripts/idlparser_test.dart',
@@ skipping 136 matching lines @@
 '../samples/isolate/HelloIsolate.dart',
 '../samples/isolate_html/IsolateSample.dart',
 '../samples/isolate_html/isolate_sample.dart',
 '../samples/logo/logo.dart',
 '../samples/markdown/ast.dart',
 '../samples/markdown/block_parser.dart',
 '../samples/markdown/html_renderer.dart',
 '../samples/markdown/inline_parser.dart',
 '../samples/markdown/lib.dart',
 '../samples/markdown/markdown.dart',
-'../samples/markdown/test/markdown_tests.dart',
+'../samples/markdown/test/markdown_test.dart',
 '../samples/matrix/float32.dart',
 '../samples/matrix/matrix4.dart',
 '../samples/matrix/matrix_client.dart',
 '../samples/matrix/matrix_server.dart',
 '../samples/pond/editors.dart',
 '../samples/pond/editors_stub.dart',
 '../samples/pond/html_file_system.dart',
 '../samples/pond/pond.dart',
 '../samples/pond/util.dart',
 '../samples/slider/SliderSample.dart',
@@ skipping 210 matching lines @@
 './samples/ifrog.dart',
 './server/frog_server.dart',
 './server/toss.dart',
 './source.dart',
 './token.dart',
 './tokenizer.dart',
 './tokenizer.g.dart',
 './tree.dart',
 './tree.g.dart',
 './utils.dart'];