Enables specifying mojo url mapping on command line

mojo/shell/BUILD.gn

 # 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.
 
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//build/config/ui.gni")
 
 executable("mojo_shell") {
   deps = [
     ":lib",
@@ skipping 130 matching lines @@
 
   datadeps = [
     "//mojo/services/test_service:mojo_test_app",
     "//mojo/services/test_service:mojo_test_request_tracker_app",
   ]
 
   sources = [
     "child_process_host_unittest.cc",
     "dynamic_application_loader_unittest.cc",
     "in_process_dynamic_service_runner_unittest.cc",
+    "mojo_url_resolver_unittest.cc",
     "shell_test_base.cc",
     "shell_test_base.h",
     "shell_test_base_unittest.cc",
     "shell_test_main.cc",
   ]
 
   if (is_android) {
     deps += [
       # TODO(GYP):
       #'../testing/android/native_test.gyp:native_test_native_code',
@@ skipping 29 matching lines @@
     "//mojo/edk/system",
     "//mojo/environment:chromium",
   ]
 
   sources = [
     "incoming_connection_listener_unittest.cc",
     "external_application_listener_unittest.cc",
     "external_application_test_main.cc",
   ]
 }