Make skydb --gdb work a bit better on Android

sky/tools/android_library_cacher.py

 #!/usr/bin/env python
 # Copyright 2015 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 argparse
+import logging
+import os
 import re
+import skypy.paths
+import subprocess
 import sys
-import os
-import logging
-import subprocess
 
 SRC_ROOT = skypy.paths.Paths('ignored').src_root
 ADB_PATH = os.path.join(SRC_ROOT,
     'third_party/android_tools/sdk/platform-tools/adb')
 
 
 # TODO(eseidel): This should be shared with adb_gdb
 def main():
     logging.basicConfig(level=logging.INFO)
     parser = argparse.ArgumentParser(
@@ skipping 34 matching lines @@
         dest_dir = os.path.dirname(dest_file)
         if not os.path.exists(dest_dir):
             os.makedirs(dest_dir)
         print '%s -> %s' % (library_path, dest_file)
         pull_cmd = [ADB_PATH, 'pull', library_path, dest_file]
         subprocess.check_call(pull_cmd, stderr=dev_null)
 
 
 if __name__ == '__main__':
     main()