Run media_perftests in a single process.

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 442 matching lines @@
 
   def AddCCPerfTests(self, factory_properties=None):
     self.AddAnnotatedPerfStep('cc_perftests', None, 'graphing',
                               cmd_name='cc_perftests',
                               step_name='cc_perftests',
                               factory_properties=factory_properties)
 
   def AddMediaPerfTests(self, factory_properties=None):
     self.AddAnnotatedPerfStep('media_perftests', None, 'graphing',
                               cmd_name='media_perftests',
+                              cmd_options=['--single-process-tests'],
                               step_name='media_perftests',
                               factory_properties=factory_properties)
 
   def AddMemoryTests(self, factory_properties=None):
     self.AddAnnotatedPerfStep('memory', 'GeneralMix*MemoryTest.*', 'graphing',
                               factory_properties=factory_properties)
 
   def AddSyncPerfTests(self, factory_properties=None):
     options = ['--ui-test-action-max-timeout=120000']
 
@@ skipping 1110 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), '/')