Enable presubmit pylint in build/android.

build/android/pylib/host_driven/test_runner.py

 # Copyright 2013 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 host-driven tests on a particular device."""
 
 import logging
 import sys
 import time
 import traceback
 
 from pylib.base import base_test_result
 from pylib.base import base_test_runner
 from pylib.instrumentation import test_result
 
-import test_case
+from . import test_case
 
 
 class HostDrivenExceptionTestResult(test_result.InstrumentationTestResult):
   """Test result corresponding to a python exception in a host-driven test."""
 
   def __init__(self, test_name, start_date_ms, exc_info):
     """Constructs a HostDrivenExceptionTestResult object.
 
     Args:
       test_name: name of the test which raised an exception.
@@ skipping 98 matching lines @@
         # until the test is fixed.
         exc_info = sys.exc_info()
         results = base_test_result.TestRunResults()
         results.AddResult(HostDrivenExceptionTestResult(
             test.tagged_name, start_date_ms, exc_info))
 
     if not results.DidRunPass():
       return results, test
     else:
       return results, None