WebRtc_Word32 => int32_t etc. in audio_coding/

BUG=314

Review URL: https://webrtc-codereview.appspot.com/1271006

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3789 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/audio_coding/main/test/SpatialAudio.h

@@ -29,7 +29,7 @@ public:
 
     void Perform();
 private:
-    WebRtc_Word16 Setup();
+    int16_t Setup();
     void EncodeDecode(double leftPanning, double rightPanning);
     void EncodeDecode();