Eliminate standalone timeout_test, pass_test, and fail_test.

tools/testing/dart/test_progress.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.
 
 #library("test_progress");
 
 #import("dart:io");
-#import("dart:builtin");
 #import("test_runner.dart");
 #import("test_suite.dart");
 
 class ProgressIndicator {
   ProgressIndicator(this._startTime, this._printTiming)
       : _tests = [], _failureSummary = [];
 
   factory ProgressIndicator.fromName(String name,
                                      Date startTime,
                                      bool printTiming) {
@@ skipping 347 matching lines @@
       // printed by the program invoking this.
       // TODO(ahe): Pass in the step name as an option, and let
       // test.py take care of printing the steps.
       var name = 'failures ($_startTime)';
       print('@@@STEP_FAILURE@@@');
       print('@@@BUILD_STEP $name@@@');
     }
     super._printFailureSummary();
   }
 }