[Android] Prepare build/android/ for catapult+devil.

build/android/method_count.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 os
 import re
 import shutil
 import sys
 import tempfile
 import zipfile
 
+import devil_chromium
 from devil.android.sdk import dexdump
-from pylib import constants
+from pylib.constants import host_paths
 
-sys.path.append(os.path.join(constants.DIR_SOURCE_ROOT, 'build', 'util', 'lib',
+sys.path.append(os.path.join(host_paths.DIR_SOURCE_ROOT, 'build', 'util', 'lib',
                              'common'))
 import perf_tests_results_helper # pylint: disable=import-error
 
 
 _METHOD_IDS_SIZE_RE = re.compile(r'^method_ids_size +: +(\d+)$')
 
 def ExtractIfZip(dexfile, tmpdir):
   if not dexfile.endswith('.zip'):
     return [dexfile]
 
@@ skipping 18 matching lines @@
     shutil.rmtree(tmpdir)
 
 def main():
   parser = argparse.ArgumentParser()
   parser.add_argument(
       '--apk-name', help='Name of the APK to which the dexfile corresponds.')
   parser.add_argument('dexfile')
 
   args = parser.parse_args()
 
+  devil_chromium.Initialize()
+
   if not args.apk_name:
     dirname, basename = os.path.split(args.dexfile)
     while basename:
       if 'apk' in basename:
         args.apk_name = basename
         break
       dirname, basename = os.path.split(dirname)
     else:
       parser.error(
           'Unable to determine apk name from %s, '
           'and --apk-name was not provided.' % args.dexfile)
 
   method_count = MethodCount(args.dexfile)
   perf_tests_results_helper.PrintPerfResult(
       '%s_methods' % args.apk_name, 'total', [method_count], 'methods')
   return 0
 
 if __name__ == '__main__':
   sys.exit(main())