audio_coding: remove "main" directory

webrtc/modules/audio_coding/test/utility.h

 /*
  *  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.
  */
 
-#ifndef WEBRTC_MODULES_AUDIO_CODING_MAIN_TEST_UTILITY_H_
-#define WEBRTC_MODULES_AUDIO_CODING_MAIN_TEST_UTILITY_H_
+#ifndef WEBRTC_MODULES_AUDIO_CODING_TEST_UTILITY_H_
+#define WEBRTC_MODULES_AUDIO_CODING_TEST_UTILITY_H_
 
 #include "testing/gtest/include/gtest/gtest.h"
-#include "webrtc/modules/audio_coding/main/include/audio_coding_module.h"
+#include "webrtc/modules/audio_coding/include/audio_coding_module.h"
 
 namespace webrtc {
 
 //-----------------------------
 #define CHECK_ERROR(f)                                                         \
   do {                                                                         \
     EXPECT_GE(f, 0) << "Error Calling API";                                    \
   } while(0)
 
 //-----------------------------
@@ skipping 103 matching lines @@
  private:
   uint32_t _numFrameTypes[5];
 };
 
 void UseLegacyAcm(webrtc::Config* config);
 
 void UseNewAcm(webrtc::Config* config);
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_MODULES_AUDIO_CODING_MAIN_TEST_UTILITY_H_
+#endif  // WEBRTC_MODULES_AUDIO_CODING_TEST_UTILITY_H_