Don't print the dev server config if not asked.

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 127 matching lines @@
     if not argument.startswith(key):
       continue
     arguments[i] = argument + delimiter + value
     break
   else:
     arguments.append(key + value)
 
   return arguments
 
 
-def _configure_dev_server(shell, shell_args, dev_server_config):
+def _configure_dev_server(shell, shell_args, dev_server_config, verbose):
   """Sets up a dev server on the host according to |dev_server_config|.
 
   Args:
     shell: The shell that is being configured.
     shell_arguments: Current list of shell arguments.
     dev_server_config: Instance of shell_config.DevServerConfig describing the
         dev server to be set up.
 
   Returns:
     The updated argument list.
   """
   port = dev_server_config.port if dev_server_config.port else 0
   server_url = shell.serve_local_directories(dev_server_config.mappings,
                                              port=port)
   shell_args.append('--map-origin=%s=%s' % (dev_server_config.host, server_url))
-  print "Configured %s locally at %s to serve:" % (dev_server_config.host,
-                                                   server_url)
-  for mapping_prefix, mapping_path in dev_server_config.mappings:
-    print "  /%s -> %s" % (mapping_prefix, mapping_path)
+
+  if verbose:
+    print "Configured %s locally at %s to serve:" % (dev_server_config.host,
+                                                     server_url)
+    for mapping_prefix, mapping_path in dev_server_config.mappings:
+      print "  /%s -> %s" % (mapping_prefix, mapping_path)
   return shell_args
 
 
 def get_shell(shell_config, shell_args):
   """
   Produces a shell abstraction configured according to |shell_config|.
 
   Args:
     shell_config: Instance of shell_config.ShellConfig.
     shell_args: Additional raw shell arguments to be passed to the shell. We
@@ skipping 40 matching lines @@
                                                fixed_port=True))
 
   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)
+    shell_args = _configure_dev_server(shell, shell_args, dev_server_config,
+                                       shell_config.verbose)
 
   return shell, shell_args