Issue 8051. Make extended exit codes optional.

compiler/java/com/google/dart/compiler/UnitTestBatchRunner.java

 // 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.
 
 package com.google.dart.compiler;
 
 
 import com.google.dart.compiler.DartCompiler.Result;
 
 import java.io.BufferedReader;
@@ skipping 26 matching lines @@
     int testsFailed = 0;
     int totalTests = 0;
     Result batchResult = new Result(DartCompiler.RESULT_OK, null);
     try {
       String line;
       for (; (line = cmdlineReader.readLine()) != null; totalTests++) {
         long testStart = System.currentTimeMillis();
         // TODO(zundel): These are shell script cmdlines: be smarter about quoted strings.
         String[] args = line.trim().split("\\s+");
         Result result = toolInvocation.invoke(args);
-        boolean resultPass = result.code >= DartCompiler.RESULT_ERRORS;
+        boolean resultPass = result.code < DartCompiler.RESULT_ERRORS;
         if (resultPass) {
           testsFailed++;
         }
         batchResult = batchResult.merge(result);
         // Write stderr end token and flush.
         System.err.println(">>> EOF STDERR");
         System.err.flush();
         System.out.println(">>> TEST " + (resultPass ? "PASS" : "FAIL") + " "
             + (System.currentTimeMillis() - testStart) + "ms");
         System.out.flush();
       }
     } catch (Throwable e) {
       System.err.println(">>> EOF STDERR");
       System.err.flush();
       System.out.println(">>> TEST CRASH");
       System.out.flush();
       throw e;
     }
     long elapsed = System.currentTimeMillis() - startTime;
     System.out.println(">>> BATCH END (" + (totalTests - testsFailed) + "/"
         + totalTests + ") " + elapsed + "ms");
     System.out.flush();
     return batchResult;
   }
 }