Use test.dart for dartc buildbot. Ensure that test.dart creates the build directory.

client/tools/buildbot_annotated_steps.py

 # 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.
 
 #!/usr/bin/python
 
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ skipping 66 matching lines @@
   """Compiles the client code to javascript for dartc tests."""
   return subprocess.call(
       [sys.executable, './tools/build.py', '--mode=' + mode, 'compiler'])
 
 def RunBrowserTests(component, mode, platform):
   """Runs the Dart client tests."""
   if platform == 'linux':
     cmd = ['xvfb-run']
   else:
     cmd = []
-  cmd += [sys.executable, './tools/test.py',
+  cmd += [sys.executable, './tools/test_wrapper.py',
      '--component=' + component, '--mode=' + mode,
      '--time', '--report', '--progress=buildbot', '-v']
   return subprocess.call(cmd)
 
 def GetUtils():
   '''
   dynamically get the utils module
   We use a dynamic import for tools/util.py because we derive its location
   dynamically using sys.argv[0]. This allows us to run this script from
   different directories.
@@ skipping 105 matching lines @@
     status = ProcessDartClientTests(component, mode, platform, name)
 
   if status:
     print '@@@STEP_FAILURE@@@'
 
   return status
 
 
 if __name__ == '__main__':
   sys.exit(main())