Enable the -Wundef warning for clang

webrtc/modules/audio_coding/neteq/neteq_unittest.cc

 /*
  *  Copyright (c) 2011 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 "webrtc/modules/audio_coding/neteq/include/neteq.h"
 
 #include <math.h>
 #include <stdlib.h>
 #include <string.h>  // memset
 
 #include <algorithm>
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "gflags/gflags.h"
-#include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/test/gtest.h"
+#include "webrtc/base/ignore_wundef.h"
 #include "webrtc/base/sha1digest.h"
 #include "webrtc/base/stringencode.h"
 #include "webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.h"
 #include "webrtc/modules/audio_coding/neteq/tools/audio_loop.h"
 #include "webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h"
 #include "webrtc/modules/audio_coding/codecs/pcm16b/pcm16b.h"
 #include "webrtc/modules/include/module_common_types.h"
 #include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/typedefs.h"
 
 #ifdef WEBRTC_NETEQ_UNITTEST_BITEXACT
+RTC_PUSH_IGNORING_WUNDEF()
 #ifdef WEBRTC_ANDROID_PLATFORM_BUILD
 #include "external/webrtc/webrtc/modules/audio_coding/neteq/neteq_unittest.pb.h"
 #else
 #include "webrtc/audio_coding/neteq/neteq_unittest.pb.h"
 #endif
+RTC_POP_IGNORING_WUNDEF()
 #endif
 
 DEFINE_bool(gen_ref, false, "Generate reference files.");
 
 namespace {
 
 const std::string& PlatformChecksum(const std::string& checksum_general,
                                     const std::string& checksum_android,
                                     const std::string& checksum_win_32,
                                     const std::string& checksum_win_64) {
-#ifdef WEBRTC_ANDROID
+#if defined(WEBRTC_ANDROID)
     return checksum_android;
-#elif WEBRTC_WIN
+#elif defined(WEBRTC_WIN)
   #ifdef WEBRTC_ARCH_64_BITS
     return checksum_win_64;
   #else
     return checksum_win_32;
   #endif  // WEBRTC_ARCH_64_BITS
 #else
   return checksum_general;
 #endif  // WEBRTC_WIN
 }
 
@@ skipping 1522 matching lines @@
     if (muted) {
       EXPECT_TRUE(AudioFramesEqualExceptData(out_frame1, out_frame2));
     } else {
       EXPECT_TRUE(AudioFramesEqual(out_frame1, out_frame2));
     }
   }
   EXPECT_FALSE(muted);
 }
 
 }  // namespace webrtc