Add support for running dart2js in batch mode on the bots

tools/bots/bot.py

 #!/usr/bin/python
 
 # 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.
 
 """
 Shared code for use in the buildbot scripts.
 """
 
@@ skipping 27 matching lines @@
   - test_set: Specification of a non standard test set or None.
   - csp: This is using csp when running
   - arch: The architecture to build on.
   - dart2js_full: Boolean indicating whether this builder will run dart2js
     on several different runtimes.
   - builder_tag: A tag indicating a special builder setup.
   """
   def __init__(self, compiler, runtime, mode, system, checked=False,
                host_checked=False, minified=False, shard_index=None,
                total_shards=None, is_buildbot=False, test_set=None,
-               csp=None, arch=None, dart2js_full=False, builder_tag=None):
+               csp=None, arch=None, dart2js_full=False, builder_tag=None,
+               batch=False):
     self.compiler = compiler
     self.runtime = runtime
     self.mode = mode
     self.system = system
     self.checked = checked
     self.host_checked = host_checked
     self.minified = minified
     self.shard_index = shard_index
     self.total_shards = total_shards
     self.is_buildbot = is_buildbot
     self.test_set = test_set
     self.csp = csp
     self.dart2js_full = dart2js_full
     self.builder_tag = builder_tag
+    self.batch = batch
     if (arch == None):
       self.arch = 'ia32'
     else:
       self.arch = arch
 
   def PrintBuildInfo(self):
     shard_description = ""
     if self.shard_index:
       shard_description = " shard %s of %s" % (self.shard_index,
                                                self.total_shards)
@@ skipping 177 matching lines @@
   if exit_code != 0:
     raise OSError(exit_code)
 
 
 def GetStepName(name, flags):
   """
   Filters out flags with '=' as this breaks the /stats feature of the buildbot.
   """
   flags = [x for x in flags if not '=' in x]
   return ('%s tests %s' % (name, ' '.join(flags))).strip()