Fix failing NavigationManagerUtil test that wasn't being run.

ios/web/test/BUILD.gn

 # Copyright 2016 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("//tools/grit/grit_rule.gni")
 import("//tools/grit/repack.gni")
 
 mojom("mojo_bindings") {
   sources = [
@@ skipping 40 matching lines @@
   configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
 
   deps = [
     ":test_constants",
     "//base",
     "//base/test:test_support",
     "//ios/web:web",
     "//ios/web/public/test/fakes",
     "//ios/web/public/test/http_server",
+    "//ios/web/test/fakes",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base",
   ]
 
   sources = [
     "crw_fake_web_controller_observer.h",
     "crw_fake_web_controller_observer.mm",
     "test_web_thread.cc",
     "test_web_thread_bundle.cc",
     "url_test_util.mm",
     "web_int_test.h",
     "web_int_test.mm",
     "web_test_suite.mm",
     "web_test_with_web_controller.h",
     "web_test_with_web_controller.mm",
     "wk_web_view_crash_utils.h",
     "wk_web_view_crash_utils.mm",
   ]
 }
 
 source_set("test_constants") {
   testonly = true
   sources = [
     "test_url_constants.cc",
     "test_url_constants.h",
   ]
 }