Android: Make number of test retries configurable.

build/android/pylib/gtest/dispatch.py

 # Copyright (c) 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 copy
 import fnmatch
 import logging
 import os
 
 from pylib import android_commands
@@ skipping 147 matching lines @@
   if options.gtest_filter:
     all_tests = [t for t in options.gtest_filter.split(':') if t]
   else:
     all_tests = GetAllEnabledTests(RunnerFactory, attached_devices)
   num_devices = len(attached_devices)
   tests = [':'.join(all_tests[i::num_devices]) for i in xrange(num_devices)]
   tests = [t for t in tests if t]
 
   # Run tests.
   test_results = shard.ShardAndRunTests(RunnerFactory, attached_devices, tests,
-                                        options.build_type, test_timeout=None)
+                                        options.build_type, test_timeout=None,
+                                        num_retries=options.num_retries)
 
   report_results.LogFull(
       results=test_results,
       test_type='Unit test',
       test_package=suite_name,
       build_type=options.build_type,
       flakiness_server=options.flakiness_dashboard_server)
   report_results.PrintAnnotation(test_results)
 
   for buildbot_emulator in buildbot_emulators:
@@ skipping 34 matching lines @@
   failures = 0
   for suite_name, suite_path in all_test_suites:
     # Give each test suite its own copy of options.
     test_options = copy.deepcopy(options)
     test_options.test_suite = suite_path
     failures += _RunATestSuite(test_options, suite_name)
 
   if options.use_xvfb:
     framebuffer.Stop()
   return failures