Make browser tests all run from a server instead of the local filesystem.

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 "test_runner.dart";
 import "test_suite.dart";
 import "status_file_parser.dart";
+import "http_server.dart" as http_server;
 
 class ProgressIndicator {
   ProgressIndicator(this._startTime, this._printTiming)
       : _tests = [], _failureSummary = [];
 
   factory ProgressIndicator.fromName(String name,
                                      Date startTime,
                                      bool printTiming) {
     switch (name) {
       case 'compact':
@@ skipping 167 matching lines @@
                    'contains binary data!');
       } else {
         output.add(new String.fromCharCodes(test.lastCommandOutput.stdout));
       }
     }
     if (!test.lastCommandOutput.stderr.isEmpty) {
       output.add('');
       output.add('stderr:');
       output.add(new String.fromCharCodes(test.lastCommandOutput.stderr));
     }
+    if (test is BrowserTestCase) {
+      // Additional command for rerunning the steps locally after the fact.
+      output.add('To retest, run: '
+          '${TestUtils.dartTestExecutable.toNativePath()} '
+          '${TestUtils.dartDir().toNativePath()}/tools/testing/dart/'
+          'http_server.dart -m ${test.configuration["mode"]} '
+          '-a ${test.configuration["arch"]} '
+          '-p ${http_server.TestingServerRunner.serverList[0].port} '
+          '-c ${http_server.TestingServerRunner.serverList[1].port}');
+    }
     for (Command c in test.commands) {
       output.add('');
       String message = (c == test.commands.last
           ? "Command line" : "Compilation command");
       output.add('$message: ${c.commandLine}');
     }
     return output;
   }
 
   void _printFailureSummary() {
@@ skipping 270 matching lines @@
       print('');
       print('$config:');
       statuses.sort((a, b) => a.compareTo(b));
       for (String status in statuses) {
         print('  $status');
       }
     });
     _printStatus();
   }
 }