Reduce test.dart memory usage.

tools/testing/dart/multitest.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 multitest;
 
 import "dart:async";
 import "dart:io";
 import "test_suite.dart";
 import "utils.dart";
@@ skipping 254 matching lines @@
       bool hasRuntimeErrors = outcome.contains('runtime error');
       bool hasCompileError = outcome.contains('compile-time error');
       bool isNegativeIfChecked = outcome.contains('dynamic type error');
       bool hasCompileErrorIfChecked = outcome.contains('checked mode compile-time error');
       doTest(multitestFilename,
              hasCompileError,
              hasRuntimeErrors,
              isNegativeIfChecked: isNegativeIfChecked,
              hasCompileErrorIfChecked: hasCompileErrorIfChecked,
              hasStaticWarning: hasStaticWarning,
-             multitestOutcome: outcome,
              multitestKey: key,
              originTestPath: filePath);
     }
 
     return null;
   });
 }
 
 
 Path CreateMultitestDirectory(String outputDir, Path suiteDir) {
@@ skipping 11 matching lines @@
     // TestSuite.forDirectory.
     split.removeLast();
   }
   String path = '${generatedTestDir.path}/${split.last}';
   Directory dir = new Directory(path);
   if (!dir.existsSync()) {
     dir.createSync();
   }
   return new Path(new File(path).absolute.path);
 }