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

build/android/findbugs_diff.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2012 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.
 
 """Runs findbugs, and returns an error code if there are new warnings.
 
 Other options
   --only-analyze used to only analyze the class you are interested.
   --relase-build analyze the classes in out/Release directory.
   --findbugs-args used to passin other findbugs's options.
 
 Run
   $CHROMIUM_SRC/third_party/findbugs/bin/findbugs -textui for details.
 
 """
 
 import argparse
 import os
 import sys
 
+import devil_chromium
 from devil.utils import run_tests_helper
-from pylib import constants
+
+from pylib.constants import host_paths
 from pylib.utils import findbugs
 
 _DEFAULT_BASE_DIR = os.path.join(
-    constants.DIR_SOURCE_ROOT, 'build', 'android', 'findbugs_filter')
+    host_paths.DIR_SOURCE_ROOT, 'build', 'android', 'findbugs_filter')
 
 sys.path.append(
-    os.path.join(constants.DIR_SOURCE_ROOT, 'build', 'android', 'gyp'))
+    os.path.join(host_paths.DIR_SOURCE_ROOT, 'build', 'android', 'gyp'))
 from util import build_utils # pylint: disable=import-error
 
 
 def main():
   parser = argparse.ArgumentParser()
 
   parser.add_argument(
       '-v', '--verbose', action='count', help='Enable verbose logging.')
   parser.add_argument(
       '-a', '--auxclasspath', default=None, dest='auxclasspath',
@@ skipping 26 matching lines @@
                         "action's first output.")
 
   parser.add_argument(
       'jar_paths', metavar='JAR_PATH', nargs='+',
       help='JAR file to analyze')
 
   args = parser.parse_args(build_utils.ExpandFileArgs(sys.argv[1:]))
 
   run_tests_helper.SetLogLevel(args.verbose)
 
+  devil_chromium.Initialize()
+
   if args.auxclasspath:
     args.auxclasspath = args.auxclasspath.split(':')
   elif args.auxclasspath_gyp:
     args.auxclasspath = build_utils.ParseGypList(args.auxclasspath_gyp)
 
   if args.base_dir:
     if not args.exclude:
       args.exclude = os.path.join(args.base_dir, 'findbugs_exclude.xml')
 
   findbugs_command, findbugs_warnings = findbugs.Run(
@@ skipping 19 matching lines @@
               + args.jar_paths)
     if args.stamp:
       build_utils.Touch(args.stamp)
 
   return len(findbugs_warnings)
 
 
 if __name__ == '__main__':
   sys.exit(main())