Add client/tests/client web tests to the test.dart test script.

tools/testing/dart/test_progress.dart

 // Copyright (c) 2011, 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("test_runner.dart");
 #import("test_suite.dart");
 
 class ProgressIndicator {
@@ skipping 106 matching lines @@
     print(expected.toString());
     print('Actual: ${test.output.result}');
     if (!test.output.stdout.isEmpty()) {
       print('\nstdout:');
       test.output.stdout.forEach((s) => print(s));
     }
     if (!test.output.stderr.isEmpty()) {
       print('\nstderr:');
       test.output.stderr.forEach((s) => print(s));
     }
-    if (test is BrowserTestCase) {
+    if (test is BrowserTestCase && test.dynamic.compilerPath != null) {
       print('\nCompilation command: ${test.dynamic.compilerPath} ' +
             Strings.join(test.dynamic.compilerArguments, ' '));
     }
     print('\nCommand line: ${test.commandLine}');
   }
 
   void _printStatus() {
     if (_failedTests == 0) {
       print('\n===');
       print('=== All tests succeeded');
@@ skipping 144 matching lines @@
     var status = 'pass';
     if (test.output.unexpectedOutput) {
       status = 'fail';
     }
     var percent = ((_completedTests() / _foundTests) * 100).toInt().toString();
     print('Done ${test.displayName}: $status');
     print('@@@STEP_CLEAR@@@');
     print('@@@STEP_TEXT@ $percent% +$_passedTests -$_failedTests @@@');
   }
 }