audio_coding: remove "main" directory

webrtc/modules/audio_coding/test/TestRedFec.cc

Index: webrtc/modules/audio_coding/test/TestRedFec.cc
diff --git a/webrtc/modules/audio_coding/main/test/TestRedFec.cc b/webrtc/modules/audio_coding/test/TestRedFec.cc
similarity index 98%
rename from webrtc/modules/audio_coding/main/test/TestRedFec.cc
rename to webrtc/modules/audio_coding/test/TestRedFec.cc
index 0627ae2d74df1020a4689307f14e09b385fcdac6..d54402657f402a5fadda0cc3c0369ca9f80b90a5 100644
--- a/webrtc/modules/audio_coding/main/test/TestRedFec.cc
+++ b/webrtc/modules/audio_coding/test/TestRedFec.cc
@@ -8,15 +8,15 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/modules/audio_coding/main/test/TestRedFec.h"
+#include "webrtc/modules/audio_coding/test/TestRedFec.h"
 
 #include <assert.h>
 
 #include "webrtc/common.h"
 #include "webrtc/common_types.h"
 #include "webrtc/engine_configurations.h"
-#include "webrtc/modules/audio_coding/main/include/audio_coding_module_typedefs.h"
-#include "webrtc/modules/audio_coding/main/test/utility.h"
+#include "webrtc/modules/audio_coding/include/audio_coding_module_typedefs.h"
+#include "webrtc/modules/audio_coding/test/utility.h"
 #include "webrtc/system_wrappers/include/trace.h"
 #include "webrtc/test/testsupport/fileutils.h"