Replace usage of md5 with sha256 for generation of mojo app ids.

sky/tools/skydb

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 from skypy.skyserver import SkyServer
 import argparse
 import json
 import logging
 import os
@@ skipping 176 matching lines @@
 
         sky_server = self.sky_server_for_args(args)
         self.pids['sky_server_pid'] = sky_server.start()
         self.pids['sky_server_port'] = sky_server.port
         self.pids['sky_server_root'] = sky_server.root
 
         self.pids['build_dir'] = self.paths.build_dir
         self.pids['sky_command_port'] = args.command_port
 
         if is_android:
+            subprocess.check_call([ADB_PATH, 'root'])
+
             # We could make installing conditional on an argument.
             apk_path = os.path.join(self.paths.build_dir, 'apks',
                 ANDROID_APK_NAME)
             subprocess.check_call([ADB_PATH, 'install', '-r', apk_path])
 
             port_string = 'tcp:%s' % sky_server.port
             subprocess.check_call([
                 ADB_PATH, 'reverse', port_string, port_string
             ])
             self.pids['remote_sky_server_port'] = sky_server.port
@@ skipping 385 matching lines @@
         load_parser.set_defaults(func=self.load_command)
 
         args = parser.parse_args()
         args.func(args)
 
         self._write_pid_file(PID_FILE_PATH, self.pids)
 
 
 if __name__ == '__main__':
     SkyDebugger().main()