Support running w/ Sky from a local checkout through a config file.

mojo/devtools/common/devtoolslib/shell_arguments.py

 # Copyright 2015 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.
 
 """Produces configured shell abstractions.
 
 This module knows how to produce a configured shell abstraction based on
 shell_config.ShellConfig.
 """
 
@@ skipping 84 matching lines @@
   if map_origins:
     for map_origin in sorted(map_origins):
       mapping = _rewrite(map_origin, _host_local_origin_destination, shell,
                          next_port)
       next_port += 1
       # Origin mappings are specified as separate, repeated shell arguments.
       args.append('--map-origin=' + mapping)
   return args
 
 
-def _configure_sky(shell_args):
-  """Maps mojo:sky_viewer as a content handler for dart applications.
-  app.
-
-  Args:
-    shell_args: Current list of shell arguments.
-
-  Returns:
-    Updated list of shell arguments.
-  """
-  # Configure the content type mappings for the sky_viewer. This is needed
-  # only for the Sky apps that do not declare mojo:sky_viewer in a shebang.
-  # TODO(ppi): drop this part once we can rely on the Sky files declaring
-  # correct shebang.
-  shell_args = append_to_argument(shell_args, '--content-handlers=',
-                                            'text/sky,mojo:sky_viewer')
-  shell_args = append_to_argument(shell_args, '--content-handlers=',
-                                            'application/dart,mojo:sky_viewer')
-  return shell_args
-
-
 def configure_local_origin(shell, local_dir, fixed_port=True):
   """Sets up a local http server to serve files in |local_dir| along with
   device port forwarding if needed.
 
   Returns:
     The list of arguments to be appended to the shell argument list.
   """
 
   origin_url = shell.serve_local_directory(
       local_dir, _LOCAL_ORIGIN_PORT if fixed_port else 0)
@@ skipping 91 matching lines @@
   shell_args = _apply_mappings(shell, shell_args, shell_config.map_url_list,
                                shell_config.map_origin_list)
 
   if shell_config.origin:
     if _is_web_url(shell_config.origin):
       shell_args.append('--origin=' + shell_config.origin)
     else:
       shell_args.extend(configure_local_origin(shell, shell_config.origin,
                                                fixed_port=True))
 
-  if shell_config.sky:
-    shell_args = _configure_sky(shell_args)
+  if shell_config.content_handlers:
+    for (mime_type,
+         content_handler_url) in shell_config.content_handlers.iteritems():
+      shell_args = append_to_argument(shell_args, '--content-handlers=',
+                                      '%s,%s' % (mime_type,
+                                                 content_handler_url))
 
   for dev_server_config in shell_config.dev_servers:
     shell_args = _configure_dev_server(shell, shell_args, dev_server_config)
 
   return shell, shell_args