Propagate extra_src option to bisect script from bb_host_step

build/android/buildbot/bb_host_steps.py

 #!/usr/bin/env python
 # Copyright 2013 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.
 
 import os
 import sys
 
 import bb_utils
 import bb_annotations
@@ skipping 72 matching lines @@
   bb_annotations.PrintNamedStep('findbugs')
   build_type = []
   if options.target == 'Release':
     build_type = ['--release-build']
   RunCmd([SrcPath('build', 'android', 'findbugs_diff.py')] + build_type)
   RunCmd([SrcPath(
       'tools', 'android', 'findbugs_plugin', 'test',
       'run_findbugs_plugin_tests.py')] + build_type)
 
 
-def BisectPerfRegression(_):
+def BisectPerfRegression(options):
+  args = []
+  if options.extra_src:
+    args = ['--extra_src', options.extra_src]
   RunCmd([SrcPath('tools', 'prepare-bisect-perf-regression.py'),
           '-w', os.path.join(constants.DIR_SOURCE_ROOT, os.pardir)])
   RunCmd([SrcPath('tools', 'run-bisect-perf-regression.py'),
-          '-w', os.path.join(constants.DIR_SOURCE_ROOT, os.pardir)])
+          '-w', os.path.join(constants.DIR_SOURCE_ROOT, os.pardir)] + args)
 
 
 def GetHostStepCmds():
   return [
       ('compile', Compile),
       ('extract_build', ExtractBuild),
       ('check_webview_licenses', CheckWebViewLicenses),
       ('bisect_perf_regression', BisectPerfRegression),
       ('findbugs', FindBugs),
       ('zip_build', ZipBuild)
   ]
 
 
 def GetHostStepsOptParser():
   parser = bb_utils.GetParser()
   parser.add_option('--steps', help='Comma separated list of host tests.')
   parser.add_option('--build-targets', default='',
                     help='Comma separated list of build targets.')
   parser.add_option('--experimental', action='store_true',
                     help='Indicate whether to compile experimental targets.')
+  parser.add_option('--extra_src', default='',
+                    help='Path to extra source file. If this is supplied, '
+                    'bisect script will use it to override default behavior.')
 
   return parser
 
 
 def main(argv):
   parser = GetHostStepsOptParser()
   options, args = parser.parse_args(argv[1:])
   if args:
     return sys.exit('Unused args %s' % args)
 
   setattr(options, 'target', options.factory_properties.get('target', 'Debug'))
 
   if options.steps:
     bb_utils.RunSteps(options.steps.split(','), GetHostStepCmds(), options)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))