[Android] Move base tests classes to pylib/base

build/android/pylib/gtest/single_test_runner.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.
 
 import glob
 import logging
 import os
 import sys
 
 from pylib import android_commands
 from pylib import constants
 from pylib import perf_tests_helper
 from pylib.android_commands import errors
-from pylib.base_test_runner import BaseTestRunner
-from pylib.test_result import BaseTestResult, TestResults
+from pylib.base.base_test_runner import BaseTestRunner
+from pylib.base.test_result import BaseTestResult, TestResults
 from pylib.utils import run_tests_helper
 
 import debug_info
 from test_package_apk import TestPackageApk
 from test_package_executable import TestPackageExecutable
 
 
 CURFILE_PATH = os.path.abspath(os.path.dirname(__file__))
 
 
@@ skipping 250 matching lines @@
   def TearDown(self):
     """Cleans up the test enviroment for the test suite."""
     self.tool.CleanUpEnvironment()
     if self.test_package.cleanup_test_files:
       self.adb.RemovePushedFiles()
     if self.dump_debug_info:
       self.dump_debug_info.StopRecordingLog()
     if self.dump_debug_info:
       self.dump_debug_info.ArchiveNewCrashFiles()
     super(SingleTestRunner, self).TearDown()