Enable the -Wundef warning for clang

webrtc/modules/audio_coding/neteq/delay_manager_unittest.cc

 /*
  *  Copyright (c) 2012 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.
  */
 
 // Unit tests for DelayManager class.
 
 #include "webrtc/modules/audio_coding/neteq/delay_manager.h"
 
 #include <math.h>
 
-#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/modules/audio_coding/neteq/mock/mock_delay_peak_detector.h"
 
 namespace webrtc {
 
 using ::testing::Return;
 using ::testing::_;
 
 class DelayManagerTest : public ::testing::Test {
  protected:
   static const int kMaxNumberOfPackets = 240;
@@ skipping 248 matching lines @@
   EXPECT_TRUE(dm_->SetMaximumDelay(10));
   EXPECT_FALSE(dm_->SetMinimumDelay(20));
 
   // Maximum delay less than minimum delay is not accepted.
   EXPECT_TRUE(dm_->SetMaximumDelay(100));
   EXPECT_TRUE(dm_->SetMinimumDelay(80));
   EXPECT_FALSE(dm_->SetMaximumDelay(60));
 }
 
 }  // namespace webrtc