Android: Make number of test retries configurable.

build/android/pylib/browsertests/dispatch.py

Index: build/android/pylib/browsertests/dispatch.py
diff --git a/build/android/pylib/browsertests/dispatch.py b/build/android/pylib/browsertests/dispatch.py
index de6411a9841138b30b50fc44ea1ba5fcfb79ca6d..8a9aa71726ad0ff7e5378ed9dee8b596e9dd8341 100644
--- a/build/android/pylib/browsertests/dispatch.py
+++ b/build/android/pylib/browsertests/dispatch.py
@@ -68,7 +68,8 @@ def Dispatch(options):
   test_results = shard.ShardAndRunTests(RunnerFactory, attached_devices,
                                         all_tests, options.build_type,
                                         setup_timeout=setup_timeout,
-                                        test_timeout=None)
+                                        test_timeout=None,
+                                        num_retries=options.repeat)

[frankf, 2013/04/12 21:19:38]

Description for options.repeat should be updated. We're repeating on all
non-passing scenarios (although we shouldn't for failures but that's a different
CL). I'd also rename 'repeat' to 'retries'. We probably want to add an option in
the future to repeat even if the test passes (to catch flakiness) and don't want
to conflict with this.

Also can you move this flag to common AddTestRunnerOptions in
test_options_parser and hook up it instrumentation tests as well?

[nilesh, 2013/04/12 21:42:55]

renamed to num_retries and moved to AddTestRunnerOptions.

   report_results.LogFull(
       results=test_results,
       test_type='Unit test',