Fix android presubmit errors.

build/android/buildbot/bb_device_steps.py

 #!/usr/bin/env python
 # Copyright (c) 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.
 
 import collections
 import glob
 import hashlib
 import json
 import multiprocessing
@@ skipping 493 matching lines @@
           '--metadata-dir', os.path.join(CHROME_OUT_DIR, options.target),
           '--cleanup',
           '--output', os.path.join(coverage_html, 'index.html')])
   return coverage_html
 
 
 def LogcatDump(options):
   # Print logcat, kill logcat monitor
   bb_annotations.PrintNamedStep('logcat_dump')
   logcat_file = os.path.join(CHROME_OUT_DIR, options.target, 'full_log')
-  with open(logcat_file, 'w') as f:
-    RunCmd([
-        os.path.join(CHROME_SRC_DIR, 'build', 'android',
-                     'adb_logcat_printer.py'),
-        LOGCAT_DIR], stdout=f)
+  RunCmd([SrcPath('build' , 'android', 'adb_logcat_printer.py'),
+          '--output-path', logcat_file, LOGCAT_DIR])
   RunCmd(['cat', logcat_file])
 
 
 def GenerateTestReport(options):
   bb_annotations.PrintNamedStep('test_report')
   for report in glob.glob(
       os.path.join(CHROME_OUT_DIR, options.target, 'test_logs', '*.log')):
     RunCmd(['cat', report])
     os.remove(report)
 
@@ skipping 79 matching lines @@
   setattr(options, 'target', options.factory_properties.get('target', 'Debug'))
   if options.coverage_bucket:
     setattr(options, 'coverage_dir',
             os.path.join(CHROME_OUT_DIR, options.target, 'coverage'))
 
   MainTestWrapper(options)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))