Upload new Dart binaries and re-enable unit tests for test scripts.

tools/testing/dart/co19_test.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.
 
 /**
  * Tool for running co19 tests. Used when updating co19.
  *
  * Currently, this tool is merely a convenience around multiple
  * invocations of test.dart. Long term, we hope to evolve this into a
  * script that can automate most of the tasks necessary when updating
@@ skipping 20 matching lines @@
     const <String>['-mrelease,debug', '-rvm', '-cnone', '--checked'],
     const <String>['-mrelease', '-rnone', '-cdartc'],
     const <String>['-mrelease', '-rvm', '-cdart2dart'],
     const <String>['-mrelease', '-rd8', '-cdart2js', '--use-sdk'],
     const <String>['-mrelease', '-rd8', '-cdart2js', '--use-sdk', '--checked']];
 
 void main() {
   Options options = new Options();
   File scriptFile = new File(options.script);
   Path scriptPath =
-      new Path.fromNative(scriptFile.fullPathSync())
+      new Path(scriptFile.fullPathSync())
       .directoryPath.directoryPath.directoryPath.append('test.dart');
   TestUtils.testScriptPath = scriptPath.toNativePath();
   var startTime = new Date.now();
   var optionsParser = new TestOptionsParser();
   List<Map> configurations = <Map>[];
   for (var commandLine in COMMAND_LINES) {
     List arguments = <String>[];
     arguments.addAll(COMMON_ARGUMENTS);
     arguments.addAll(options.arguments);
     arguments.addAll(commandLine);
@@ skipping 24 matching lines @@
   // Start process queue.
   var queue = new ProcessQueue(maxProcesses,
                                'diff',
                                startTime,
                                false,
                                enqueueConfiguration,
                                () {},
                                verbose,
                                listTests);
 }