WebRtc_Word32 -> int32_t in utility/

BUG=314

Review URL: https://webrtc-codereview.appspot.com/1307005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3797 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/utility/source/video_frames_queue.cc b/webrtc/modules/utility/source/video_frames_queue.cc
index 5a1ea59..039c9e8 100644
--- a/webrtc/modules/utility/source/video_frames_queue.cc
+++ b/webrtc/modules/utility/source/video_frames_queue.cc
@@ -47,7 +47,7 @@
   }
 }
 
-WebRtc_Word32 VideoFramesQueue::AddFrame(const I420VideoFrame& newFrame) {
+int32_t VideoFramesQueue::AddFrame(const I420VideoFrame& newFrame) {
   I420VideoFrame* ptrFrameToAdd = NULL;
   // Try to re-use a VideoFrame. Only allocate new memory if it is necessary.
   if (!_emptyFrames.Empty()) {
@@ -112,7 +112,7 @@
   return ptrRenderFrame;
 }
 
-WebRtc_Word32 VideoFramesQueue::ReturnFrame(I420VideoFrame* ptrOldFrame) {
+int32_t VideoFramesQueue::ReturnFrame(I420VideoFrame* ptrOldFrame) {
   ptrOldFrame->set_timestamp(0);
   ptrOldFrame->set_width(0);
   ptrOldFrame->set_height(0);
@@ -122,7 +122,7 @@
   return 0;
 }
 
-WebRtc_Word32 VideoFramesQueue::SetRenderDelay(WebRtc_UWord32 renderDelay) {
+int32_t VideoFramesQueue::SetRenderDelay(uint32_t renderDelay) {
   _renderDelayMs = renderDelay;
   return 0;
 }