Changed AECM to be built using C++

webrtc/modules/audio_processing/aecm/aecm_core_c.cc

Index: webrtc/modules/audio_processing/aecm/aecm_core_c.cc
diff --git a/webrtc/modules/audio_processing/aecm/aecm_core_c.c b/webrtc/modules/audio_processing/aecm/aecm_core_c.cc
similarity index 99%
rename from webrtc/modules/audio_processing/aecm/aecm_core_c.c
rename to webrtc/modules/audio_processing/aecm/aecm_core_c.cc
index 3a8fafa4ece495710b713cb5215fd59a92bc5279..3ee053b09293e35c7fdb80a53ed87fc97a78da70 100644
--- a/webrtc/modules/audio_processing/aecm/aecm_core_c.c
+++ b/webrtc/modules/audio_processing/aecm/aecm_core_c.cc
@@ -14,19 +14,18 @@
 #include <stddef.h>
 #include <stdlib.h>
 
+extern "C" {
 #include "webrtc/common_audio/ring_buffer.h"
 #include "webrtc/common_audio/signal_processing/include/real_fft.h"
+}
 #include "webrtc/modules/audio_processing/aecm/echo_control_mobile.h"
+extern "C" {
 #include "webrtc/modules/audio_processing/utility/delay_estimator_wrapper.h"
-#include "webrtc/system_wrappers/include/compile_assert_c.h"
 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h"
+}
 #include "webrtc/typedefs.h"
 
 // Square root of Hanning window in Q14.
-#if defined(WEBRTC_DETECT_NEON) || defined(WEBRTC_HAS_NEON)
-// Table is defined in an ARM assembly file.
-extern const ALIGN8_BEG int16_t WebRtcAecm_kSqrtHanning[] ALIGN8_END;
-#else
 static const ALIGN8_BEG int16_t WebRtcAecm_kSqrtHanning[] ALIGN8_END = {
   0, 399, 798, 1196, 1594, 1990, 2386, 2780, 3172,
   3562, 3951, 4337, 4720, 5101, 5478, 5853, 6224,
@@ -37,7 +36,6 @@ static const ALIGN8_BEG int16_t WebRtcAecm_kSqrtHanning[] ALIGN8_END = {
   15231, 15373, 15506, 15631, 15746, 15851, 15947, 16034,
   16111, 16179, 16237, 16286, 16325, 16354, 16373, 16384
 };
-#endif
 
 #ifdef AECM_WITH_ABS_APPROX
 //Q15 alpha = 0.99439986968132  const Factor for magnitude approximation
@@ -768,4 +766,3 @@ static void ComfortNoise(AecmCore* aecm,
     out[i].imag = WebRtcSpl_AddSatW16(out[i].imag, uImag[i]);
   }
 }
-