Replaced the wav file dumping functionality in aec_core.c with the newly added corresponding macros

webrtc/modules/audio_processing/logging/aec_logging_file_handling.h

Index: webrtc/modules/audio_processing/logging/aec_logging_file_handling.h
diff --git a/webrtc/modules/audio_processing/logging/aec_logging_file_handling.h b/webrtc/modules/audio_processing/logging/aec_logging_file_handling.h
new file mode 100644
index 0000000000000000000000000000000000000000..03f0321698e8a33e106c3bcc868135fcfd73aff1
--- /dev/null
+++ b/webrtc/modules/audio_processing/logging/aec_logging_file_handling.h
@@ -0,0 +1,41 @@
+/*
+ *  Copyright (c) 2015 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_PROCESSING_AEC_AEC_LOGGING_FILE_HANDLING_
+#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_LOGGING_FILE_HANDLING_
+
+#include <stdio.h>
+
+#include "webrtc/common_audio/wav_file.h"
+#include "webrtc/typedefs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef WEBRTC_AEC_DEBUG_DUMP
+// Opens a new Wav file for writing. If it was already open with a different
+// sample frequency, it closes it first.
+void WebRtcAec_ReopenWav(const char* name,
+                         int instance_index,
+                         int process_rate,
+                         int sample_rate,
+                         rtc_WavWriter** wav_file);
+
+// Opens dumpfile with instance-specific filename.
+void WebRtcAec_RawFileOpen(const char* name, int instance_counter, FILE** file);
+
+#endif  // WEBRTC_AEC_DEBUG_DUMP
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_LOGGING_FILE_HANDLING_