Drop refs to net::EmbeddedTestServer / net::File{Path,URL} utils in mojo

mojo/mojo.gyp

 # 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.
 
 {
   'target_defaults': {
     'conditions': [
       ['mojo_shell_debug_url != ""', {
         'defines': [
           'MOJO_SHELL_DEBUG=1',
@@ skipping 159 matching lines @@
         'shell/app_child_process_host.h',
         'shell/child_process.cc',
         'shell/child_process.h',
         'shell/child_process_host.cc',
         'shell/child_process_host.h',
         'shell/context.cc',
         'shell/context.h',
         'shell/dynamic_application_loader.cc',
         'shell/dynamic_application_loader.h',
         'shell/dynamic_service_runner.h',
+        'shell/external_application_listener.h',
         'shell/external_application_listener_posix.cc',
         'shell/external_application_listener_win.cc',
-        'shell/external_application_listener.h',
         'shell/external_application_registrar.mojom',
+        'shell/filename_util.cc',
+        'shell/filename_util.h',
+        'shell/in_process_dynamic_service_runner.cc',
+        'shell/in_process_dynamic_service_runner.h',
         'shell/incoming_connection_listener_posix.cc',
         'shell/incoming_connection_listener_posix.h',
         'shell/init.cc',
         'shell/init.h',
-        'shell/in_process_dynamic_service_runner.cc',
-        'shell/in_process_dynamic_service_runner.h',
         'shell/mojo_url_resolver.cc',
         'shell/mojo_url_resolver.h',
         'shell/out_of_process_dynamic_service_runner.cc',
         'shell/out_of_process_dynamic_service_runner.h',
         'shell/switches.cc',
         'shell/switches.h',
         'shell/task_runners.cc',
         'shell/task_runners.h',
         'shell/test_child_process.cc',
         'shell/test_child_process.h',
@@ skipping 570 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'mojo_js_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }