[Android] Move base tests classes to pylib/base

build/android/run_tests.py

 #!/usr/bin/env python
 #
 # 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.
 
 """Runs all the native unit tests.
 
 1. Copy over test binary to /data/local on device.
 2. Resources: chrome/unit_tests requires resources (chrome.pak and en-US.pak)
@@ skipping 30 matching lines @@
 import optparse
 import os
 import signal
 import subprocess
 import sys
 import time
 
 from pylib import android_commands
 from pylib import cmd_helper
 from pylib import ports
-from pylib.base_test_sharder import BaseTestSharder
+from pylib.base.base_test_sharder import BaseTestSharder
 from pylib.gtest import debug_info
 from pylib.gtest import gtest_config
 from pylib.gtest.single_test_runner import SingleTestRunner
 from pylib.utils import emulator
 from pylib.utils import run_tests_helper
 from pylib.utils import test_options_parser
 from pylib.utils import time_profile
 from pylib.utils import xvfb
 
 
@@ skipping 272 matching lines @@
   # the batch (this happens because the exit status is a sum of all failures
   # from all suites, but the buildbot associates the exit status only with the
   # most recent step).
   if options.exit_code:
     return failed_tests_count
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))