GN: Make //webrtc/test:fileutils visible only to //webrtc/test.

webrtc/modules/audio_coding/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../webrtc.gni")
 import("audio_coding.gni")
@@ skipping 1141 matching lines @@
     ]
     deps = [
       ":audio_coding",
       ":audio_coding_module_typedefs",
       ":audio_format_conversion",
       ":pcm16b_c",
       "../..:webrtc_common",
       "../../api/audio_codecs:builtin_audio_decoder_factory",
       "../../base:rtc_base_approved",
       "../../system_wrappers:system_wrappers",
-      "../../test:fileutils",
       "../../test:test_support",
     ]
     defines = audio_coding_defines
     if (is_win) {
       cflags = [
         # TODO(kjellander): bugs.webrtc.org/261: Fix this warning.
         "/wd4373",  # virtual function override.
       ]
     }
     if (!build_with_chromium && is_clang) {
@@ skipping 955 matching lines @@
 # webrtc/api/audio_codecs:builtin_audio_decoder_factory instead.
 # TODO(kwiberg): Remove this.
 rtc_source_set("builtin_audio_decoder_factory") {
   sources = [
     "codecs/builtin_audio_decoder_factory.h",
   ]
   deps = [
     "../../api/audio_codecs:builtin_audio_decoder_factory",
   ]
 }