WebRtc_Word32 -> int32_t in test/

BUG=314

Review URL: https://webrtc-codereview.appspot.com/1302004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3794 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/test/testsupport/frame_reader.cc b/test/testsupport/frame_reader.cc
index 1736b8a..2733122 100644
--- a/test/testsupport/frame_reader.cc
+++ b/test/testsupport/frame_reader.cc
@@ -58,7 +58,7 @@
   }
 }
 
-bool FrameReaderImpl::ReadFrame(WebRtc_UWord8* source_buffer) {
+bool FrameReaderImpl::ReadFrame(uint8_t* source_buffer) {
   assert(source_buffer);
   if (input_file_ == NULL) {
     fprintf(stderr, "FrameReader is not initialized (input file is NULL)\n");