[Android] Fix a few more symlink issues in test_runner.py.

build/android/pylib/gtest/gtest_test_instance.py

 # Copyright 2014 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
 import os
 import re
 import tempfile
 
 from devil.android import apk_helper
@@ skipping 245 matching lines @@
         args.isolate_file_path = os.path.join(
             host_paths.DIR_SOURCE_ROOT, default_isolate_file_path)
 
     if (args.isolate_file_path and
         not isolator.IsIsolateEmpty(args.isolate_file_path)):
       self._isolate_abs_path = os.path.abspath(args.isolate_file_path)
       self._isolate_delegate = isolate_delegate
       self._isolated_abs_path = os.path.join(
           constants.GetOutDirectory(), '%s.isolated' % self._suite)
     else:
-      logging.warning('No isolate file provided. No data deps will be pushed.')
+      logging.warning('%s isolate file provided. No data deps will be pushed.',
+                      'Empty' if args.isolate_file_path else 'No')
       self._isolate_delegate = None
 
     if args.app_data_files:
       self._app_data_files = args.app_data_files
       if args.app_data_file_dir:
         self._app_data_file_dir = args.app_data_file_dir
       else:
         self._app_data_file_dir = tempfile.mkdtemp()
         logging.critical('Saving app files to %s', self._app_data_file_dir)
     else:
@@ skipping 132 matching lines @@
             if l and not l.startswith('#')]
 
     return '*-%s' % ':'.join(disabled_filter_items)
 
   #override
   def TearDown(self):
     """Clear the mappings created by SetUp."""
     if self._isolate_delegate:
       self._isolate_delegate.Clear()