Change output of test.dart --list option, so it can be parsed automatically.

compiler/javatests/com/google/dart/corelib/SharedTests.java

 // 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.
 
 package com.google.dart.corelib;
 
 import com.google.common.io.CharStreams;
 import com.google.common.io.LineReader;
 import com.google.dart.runner.V8Launcher;
 
@@ skipping 52 matching lines @@
       try {
         Process process = builder.start();
         InputStream inputStream = process.getInputStream();
         StringBuilder sb = new StringBuilder();
         try {
           InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
           LineReader lineReader = new LineReader(inputStreamReader);
           String line;
           while ((line = lineReader.readLine()) != null) {
             if (!line.startsWith("dartc/")) {
-              suite.addTest(SharedTestCase.getInstance(line, false));
+              Test result = SharedTestCase.getInstance(line, false);
+              if (result != null) {
+                suite.addTest(result);
+              }
             } else if (line.startsWith("dartc/client/")) {
               suite.addTest(SharedTestCase.getInstance(line, true));
             }
           }
         } finally {
           inputStream.close();
           process.getOutputStream().close();
           InputStreamReader inputStreamReader = new InputStreamReader(process.getErrorStream());
           CharStreams.copy(inputStreamReader, sb);
           process.getErrorStream().close();
@@ skipping 20 matching lines @@
       suite.addTest(new TestCase("Configuration problem") {
         @Override
         public void runBare() throws Throwable {
           fail(message);
         }
       });
       return suite;
     }
   }
 }