[Android] Add logging to resource_sizes.py

build/android/resource_sizes.py

 #!/usr/bin/python
 # Copyright (c) 2011 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.
 
 """Prints the size of each given file and optionally computes the size of
    libchrome.so without the dependencies added for building with android NDK.
    Also breaks down the contents of the APK to determine the installed size
    and assign size contributions to different classes of file.
 """
 
 import collections
 import json
+import logging
 import operator
 import optparse
 import os
 import re
 import sys
 import tempfile
 import zipfile
 import zlib
 
 import devil_chromium
@@ skipping 377 matching lines @@
 
   PrintResourceSizes(files, chartjson=chartjson)
 
   for f in files:
     if f.endswith('.apk'):
       PrintApkAnalysis(f, chartjson=chartjson)
       PrintPakAnalysis(f, options.min_pak_resource_size)
 
   if chartjson:
     results_path = os.path.join(options.output_dir, 'results-chart.json')
+    logging.critical('Dumping json to %s', results_path)
     with open(results_path, 'w') as json_file:
       json.dump(chartjson, json_file)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))