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
diff --git a/webrtc/modules/audio_coding/neteq4/neteq_impl.cc b/webrtc/modules/audio_coding/neteq4/neteq_impl.cc
index 08a8272..7c485c6 100644
--- a/webrtc/modules/audio_coding/neteq4/neteq_impl.cc
+++ b/webrtc/modules/audio_coding/neteq4/neteq_impl.cc
@@ -548,7 +548,7 @@
     }
 
     // Update statistics.
-    if ((WebRtc_Word32) (main_header.timestamp - timestamp_) >= 0 &&
+    if ((int32_t) (main_header.timestamp - timestamp_) >= 0 &&
         !new_codec_) {
       // Only update statistics if incoming packet is not older than last played
       // out packet, and if new codec flag is not set.