Connect mojo:debugger to window_manager only when requested.

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 101 matching lines @@
         content_handlers = ['%s,%s' % (mime_type, 'mojo:sky_viewer')
             for mime_type in SUPPORTED_MIME_TYPES]
 
         remote_command_port = self.pids.get('remote_sky_command_port', self.pids['sky_command_port'])
         remote_server_port = self.pids.get('remote_sky_server_port', self.pids['sky_server_port'])
 
         shell_args = [
             '--v=1',
             '--content-handlers=%s' % ','.join(content_handlers),
             '--url-mappings=mojo:window_manager=mojo:kiosk_wm',
-            '--args-for=mojo:debugger %d' % remote_command_port,
+            '--args-for=mojo:debugger %d --wm' % remote_command_port,
             'mojo:debugger',
         ]
 
         if args.url_or_path:
             shell_args.append(
                 '--args-for=mojo:window_manager %s' % self._url_from_args(args))
 
         if args.trace_startup:
             shell_args.append('--trace-startup')
 
@@ skipping 505 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()