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

build/android/generate_emma_html.py

 #!/usr/bin/env python
 
 # Copyright 2013 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.
 
 """Aggregates EMMA coverage files to produce html output."""
 
 import fnmatch
 import json
 import optparse
 import os
 import sys
 
+import devil_chromium
 from devil.utils import cmd_helper
 from pylib import constants
+from pylib.constants import host_paths
 
 
 def _GetFilesWithExt(root_dir, ext):
   """Gets all files with a given extension.
 
   Args:
     root_dir: Directory in which to search for files.
     ext: Extension to look for (including dot)
 
   Returns:
@@ skipping 15 matching lines @@
                            help=('Root of the directory in which to search for '
                                  'coverage data (.ec) files.'))
   option_parser.add_option('--metadata-dir', default=None,
                            help=('Root of the directory in which to search for '
                                  'coverage metadata (.em) files.'))
   option_parser.add_option('--cleanup', action='store_true',
                            help=('If set, removes coverage files generated at '
                                  'runtime.'))
   options, _ = option_parser.parse_args()
 
+  devil_chromium.Initialize()
+
   if not (options.coverage_dir and options.metadata_dir and options.output):
     option_parser.error('One or more mandatory options are missing.')
 
   coverage_files = _GetFilesWithExt(options.coverage_dir, 'ec')
   metadata_files = _GetFilesWithExt(options.metadata_dir, 'em')
   print 'Found coverage files: %s' % str(coverage_files)
   print 'Found metadata files: %s' % str(metadata_files)
 
   sources = []
   for f in metadata_files:
     sources_file = os.path.splitext(f)[0] + '_sources.txt'
     with open(sources_file, 'r') as sf:
       sources.extend(json.load(sf))
-  sources = [os.path.join(constants.DIR_SOURCE_ROOT, s) for s in sources]
+  sources = [os.path.join(host_paths.DIR_SOURCE_ROOT, s) for s in sources]
   print 'Sources: %s' % sources
 
   input_args = []
   for f in coverage_files + metadata_files:
     input_args.append('-in')
     input_args.append(f)
 
   output_args = ['-Dreport.html.out.file', options.output]
   source_args = ['-sp', ','.join(sources)]
 
   exit_code = cmd_helper.RunCmd(
       ['java', '-cp',
        os.path.join(constants.ANDROID_SDK_ROOT, 'tools', 'lib', 'emma.jar'),
        'emma', 'report', '-r', 'html']
       + input_args + output_args + source_args)
 
   if options.cleanup:
     for f in coverage_files:
       os.remove(f)
 
   return exit_code
 
 
 if __name__ == '__main__':
   sys.exit(main())