Remove remains of webrtc/base

webrtc/audio/utility/BUILD.gn

 # Copyright (c) 2016 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")
 
 group("utility") {
   public_deps = [
     ":audio_frame_operations",
   ]
 }
 
 rtc_static_library("audio_frame_operations") {
   sources = [
     "audio_frame_operations.cc",
     "audio_frame_operations.h",
   ]
 
   deps = [
     "../..:webrtc_common",
-    "../../base:rtc_base_approved",
     "../../modules:module_api",
     "../../modules/audio_coding:audio_format_conversion",
+    "../../rtc_base:rtc_base_approved",
   ]
 }
 
 if (rtc_include_tests) {
   rtc_source_set("utility_tests") {
     testonly = true
     sources = [
       "audio_frame_operations_unittest.cc",
     ]
     deps = [
       ":audio_frame_operations",
-      "../../base:rtc_base_approved",
       "../../modules:module_api",
+      "../../rtc_base:rtc_base_approved",
       "../../test:test_support",
       "//testing/gtest",
     ]
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
   }
 }