Enable the -Wundef warning for clang

webrtc/common_audio/resampler/push_sinc_resampler_unittest.cc

 /*
  *  Copyright (c) 2013 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.
  */
 
 #include <cmath>
 #include <cstring>
 #include <memory>
 
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/test/gmock.h"
+#include "webrtc/test/gtest.h"
 #include "webrtc/base/timeutils.h"
 #include "webrtc/common_audio/include/audio_util.h"
 #include "webrtc/common_audio/resampler/push_sinc_resampler.h"
 #include "webrtc/common_audio/resampler/sinusoidal_linear_chirp_source.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 namespace {
 
 // Almost all conversions have an RMS error of around -14 dbFS.
@@ skipping 301 matching lines @@
         // To 32 kHz
         ::testing::make_tuple(8000, 32000, kResamplingRMSError, -70.30),
         ::testing::make_tuple(16000, 32000, kResamplingRMSError, -75.51),
         ::testing::make_tuple(32000, 32000, kResamplingRMSError, -75.51),
         ::testing::make_tuple(44100, 32000, -16.44, -51.10),
         ::testing::make_tuple(48000, 32000, -16.90, -44.03),
         ::testing::make_tuple(96000, 32000, -19.61, -18.04),
         ::testing::make_tuple(192000, 32000, -21.02, -10.94)));
 
 }  // namespace webrtc