Use logdog butler subcommand to run tests.

PRESUBMIT.py

 # Copyright (c) 2012 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.
 
 """Top-level presubmit script for Chromium.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
 """
 
@@ skipping 321 matching lines @@
     'OS_OPENBSD',
     'OS_POSIX',
     'OS_QNX',
     'OS_SOLARIS',
     'OS_WIN',
 )
 
 
 _ANDROID_SPECIFIC_PYDEPS_FILES = [
     'build/android/test_runner.pydeps',
+    'build/android/test_wrapper/logdog_wrapper.pydeps',
     'net/tools/testserver/testserver.pydeps',
 ]
 
 
 _GENERIC_PYDEPS_FILES = [
 ]
 
 
 _ALL_PYDEPS_FILES = _ANDROID_SPECIFIC_PYDEPS_FILES + _GENERIC_PYDEPS_FILES
 
@@ skipping 2021 matching lines @@
       output_api,
       json_url='http://chromium-status.appspot.com/current?format=json'))
 
   results.extend(
       input_api.canned_checks.CheckPatchFormatted(input_api, output_api))
   results.extend(input_api.canned_checks.CheckChangeHasBugField(
       input_api, output_api))
   results.extend(input_api.canned_checks.CheckChangeHasDescription(
       input_api, output_api))
   return results