Create proper wrapper scripts to decouple from swarm_client.

scripts/master/factory/chromium_commands.py

 # Copyright (c) 2012 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.
 
 """Set of utilities to add commands to a buildbot factory.
 
 This is based on commands.py and adds chromium-specific commands."""
 
 import logging
 import os
@@ skipping 1665 matching lines @@
     self._factory.addStep(commands.CreateTriggerStep(
         trigger_name='swarm_triggered',
         trigger_set_properties={
             'target_os': self._target_platform,
             'use_swarm_client_revision':
               WithProperties('%(got_swarm_client_revision:-)s'),
             'use_swarming_client_revision':
               WithProperties('%(got_swarming_client_revision:-)s'),
         },
         trigger_copy_properties=[
+            'requester',
             'run_default_swarm_tests',
             'swarm_hashes',
         ],
         do_step_if=swarm_commands.TestStepFilterTriggerSwarm))
 
   def AddTriggerCoverageTests(self, factory_properties):
     """Trigger coverage testers, wait for completion, then process coverage."""
     # Add trigger step.
     self._factory.addStep(trigger.Trigger(
         schedulerNames=[factory_properties.get('coverage_trigger')],
@@ skipping 79 matching lines @@
   return '%s/%s/%s' % (config.Master.archive_url, archive_type, builder_name)
 
 
 def _GetSnapshotUrl(factory_properties=None, builder_name='%(build_name)s'):
   if not factory_properties or 'gs_bucket' not in factory_properties:
     return (_GetArchiveUrl('snapshots', builder_name), None)
   gs_bucket = factory_properties['gs_bucket']
   gs_bucket = re.sub(r'^gs://', 'http://commondatastorage.googleapis.com/',
                      gs_bucket)
   return ('%s/index.html?path=%s' % (gs_bucket, builder_name), '/')