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

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 operator
 import optparse
 import os
 import re
 import sys
 import tempfile
 import zipfile
 import zlib
 
+import devil_chromium
 from devil.utils import cmd_helper
-from pylib import constants
+from pylib.constants import host_paths
 
-sys.path.append(os.path.join(constants.DIR_SOURCE_ROOT, 'tools', 'grit'))
-from grit.format import data_pack # pylint: disable=import-error
-sys.path.append(os.path.join(
-    constants.DIR_SOURCE_ROOT, 'build', 'util', 'lib', 'common'))
-import perf_tests_results_helper # pylint: disable=import-error
+_GRIT_PATH = os.path.join(host_paths.DIR_SOURCE_ROOT, 'tools', 'grit')
+
+with host_paths.SysPath(_GRIT_PATH):
+  from grit.format import data_pack # pylint: disable=import-error
+
+with host_paths.SysPath(host_paths.BUILD_COMMON_PATH):
+  import perf_tests_results_helper # pylint: disable=import-error
 
 
 # Static initializers expected in official builds. Note that this list is built
 # using 'nm' on libchrome.so which results from a GCC official build (i.e.
 # Clang is not supported currently).
 
 STATIC_INITIALIZER_SYMBOL_PREFIX = '_GLOBAL__I_'
 
 EXPECTED_STATIC_INITIALIZERS = frozenset([
     'allocators.cpp',
@@ skipping 223 matching lines @@
     if resource_size_map[i] >= min_pak_resource_size:
       print '%56s %5s %9s %6.2f%%' % (
           resource_id_name_map.get(i, i),
           resource_count_map[i],
           _FormatBytes(resource_size_map[i]),
           100.0 * resource_size_map[i] / total_resource_size)
 
 
 def _GetResourceIdNameMap(build_type):
   """Returns a map of {resource_id: resource_name}."""
-  out_dir = os.path.join(constants.DIR_SOURCE_ROOT, 'out', build_type)
+  out_dir = os.path.join(host_paths.DIR_SOURCE_ROOT, 'out', build_type)
   assert os.path.isdir(out_dir), 'Failed to locate out dir at %s' % out_dir
   print 'Looking at resources in: %s' % out_dir
 
   grit_headers = []
   for root, _, files in os.walk(out_dir):
     if root.endswith('grit'):
       grit_headers += [os.path.join(root, f) for f in files if f.endswith('.h')]
   assert grit_headers, 'Failed to find grit headers in %s' % out_dir
 
   id_name_map = {}
@@ skipping 75 matching lines @@
 
   # For backward compatibilty with buildbot scripts, treat --so-path as just
   # another file to print the size of. We don't need it for anything special any
   # more.
   if options.so_path:
     files.append(options.so_path)
 
   if not files:
     option_parser.error('Must specify a file')
 
+  devil_chromium.Initialize()
+
   if options.so_with_symbols_path:
     PrintStaticInitializersCount(
         options.so_with_symbols_path, chartjson=chartjson)
 
   PrintResourceSizes(files, chartjson=chartjson)
 
   for f in files:
     if f.endswith('.apk'):
       PrintApkAnalysis(f, chartjson=chartjson)
       PrintPakAnalysis(f, options.min_pak_resource_size, options.build_type)
 
   if chartjson:
     results_path = os.path.join(options.outpur_dir, 'results-chart.json')
     with open(results_path, 'w') as json_file:
       json.dump(chartjson, json_file)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))