[Android] Try harder to run every gtest within each try.

build/android/pylib/local/device/local_device_monkey_test_run.py

 # Copyright 2016 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 logging
 
 from devil.android import device_errors
 from devil.android.sdk import intent
 from pylib import constants
 from pylib.base import base_test_result
@@ skipping 64 matching lines @@
             action='%s.crash.ACTION_FIND_ALL' % _CHROME_PACKAGE,
             package=self._test_instance.package,
             activity='%s.crash.MinidumpUploadService' % _CHROME_PACKAGE)
         try:
           device.RunShellCommand(
               ['am', 'startservice'] + minidump_intent.am_args,
               as_root=True, check_return=True)
         except device_errors.CommandFailedError:
           logging.exception('Failed to start MinidumpUploadService')
 
-    return result
+    return result, None
 
   #override
   def TearDown(self):
     pass
 
   #override
   def _CreateShards(self, tests):
     return tests
 
   #override
@@ skipping 21 matching lines @@
       return device.RunShellCommand(
           cmd, timeout=self._test_instance.timeout)
     finally:
       try:
         # Kill the monkey test process on the device. If you manually
         # interupt the test run, this will prevent the monkey test from
         # continuing to run.
         device.KillAll('com.android.commands.monkey')
       except device_errors.CommandFailedError:
         pass