WEBRTC_{BIG, LITTLE}_ENDIAN -> WEBRTC_ARCH_{BIG, LITTLE}_ENDIAN.

Mostly to remove a long-standing TODO...

TESTED=trybots
R=turaj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2369005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5013 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/codecs/ilbc/encode.c b/webrtc/modules/audio_coding/codecs/ilbc/encode.c
index 75d1672..2f899a5 100644
--- a/webrtc/modules/audio_coding/codecs/ilbc/encode.c
+++ b/webrtc/modules/audio_coding/codecs/ilbc/encode.c
@@ -32,7 +32,7 @@
 #include "unpack_bits.h"
 #include "index_conv_dec.h"
 #endif
-#ifndef WEBRTC_BIG_ENDIAN
+#ifndef WEBRTC_ARCH_BIG_ENDIAN
 #include "swap_bytes.h"
 #endif
 
@@ -489,7 +489,7 @@
   WebRtcIlbcfix_PackBits(bytes, iLBCbits_inst, iLBCenc_inst->mode);
 #endif
 
-#ifndef WEBRTC_BIG_ENDIAN
+#ifndef WEBRTC_ARCH_BIG_ENDIAN
   /* Swap bytes for LITTLE ENDIAN since the packbits()
      function assumes BIG_ENDIAN machine */
 #ifdef SPLIT_10MS