Make the destructor of AudioCodingModule public.

This allows the type to be used with a scoped_ptr. Remove all calls to
the deprecated Destroy() from tests.

R=turaj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2200006

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4731 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/main/test/TestAllCodecs.h b/webrtc/modules/audio_coding/main/test/TestAllCodecs.h
index 8cde8cf..5aabcf7 100644
--- a/webrtc/modules/audio_coding/main/test/TestAllCodecs.h
+++ b/webrtc/modules/audio_coding/main/test/TestAllCodecs.h
@@ -11,6 +11,7 @@
 #ifndef WEBRTC_MODULES_AUDIO_CODING_MAIN_TEST_TEST_ALL_CODECS_H_
 #define WEBRTC_MODULES_AUDIO_CODING_MAIN_TEST_TEST_ALL_CODECS_H_
 
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
 #include "ACMTest.h"
 #include "Channel.h"
 #include "PCMFile.h"
@@ -64,8 +65,8 @@
   void DisplaySendReceiveCodec();
 
   int test_mode_;
-  AudioCodingModule* acm_a_;
-  AudioCodingModule* acm_b_;
+  scoped_ptr<AudioCodingModule> acm_a_;
+  scoped_ptr<AudioCodingModule> acm_b_;
   TestPack* channel_a_to_b_;
   PCMFile infile_a_;
   PCMFile outfile_b_;