Break out of for loop if bisect job succeeds on one test device

scripts/slave/recipe_modules/auto_bisect/local_bisect.py

 # Copyright 2015 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 base64
 import collections
 import json
 
 
 def perform_bisect(api, **flags):
   # Try catch all the exceptions thrown in bisection so that recipe can
   # post the failed job result to dashboard
   try:
     bisect_attempts = []
     if api.m.chromium.c.TARGET_PLATFORM != 'android':
       _perform_single_bisect(api, bisect_attempts, **flags)
     else:
       # pick an available device if targe platform is android
       connected_devices = _get_connected_devices(api)
       if not connected_devices:
         raise api.m.step.StepFailure(
             'No Android test devices are available')
       for device in connected_devices:
         api.m.bisect_tester.device_to_test = device
         try:
           _perform_single_bisect(api, bisect_attempts, **flags)
+          break
         except api.m.step.StepFailure:
           # Redo the bisect job if target platform is android and bisect
           # failed because the test device disconnected
           current_connected_devices = _get_connected_devices(api)
           if (api.m.bisect_tester.device_to_test not in
               current_connected_devices):
             continue
           else:
             raise
   except: # pylint: disable=bare-except
@@ skipping 65 matching lines @@
       revision_to_check.start_job()
       bisector.wait_for(revision_to_check)
 
     if bisector.check_reach_adjacent_revision(revision_to_check):
       # Only show this step if bisect has reached adjacent revisions.
       with bisector.api.m.step.nest(
           str('Check bisect finished on revision ' +
               revision_to_check.revision_string())):
         if bisector.check_bisect_finished(revision_to_check):
             bisector.bisect_over = True