WebRtc_Word32 -> int32_t in video_engine/

BUG=314

Review URL: https://webrtc-codereview.appspot.com/1302005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3801 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/video_engine/vie_sync_module.h b/video_engine/vie_sync_module.h
index 94dae57..e16d3f2 100644
--- a/video_engine/vie_sync_module.h
+++ b/video_engine/vie_sync_module.h
@@ -44,8 +44,8 @@
   int SetTargetBufferingDelay(int target_delay_ms);
 
   // Implements Module.
-  virtual WebRtc_Word32 TimeUntilNextProcess();
-  virtual WebRtc_Word32 Process();
+  virtual int32_t TimeUntilNextProcess();
+  virtual int32_t Process();
 
  private:
   scoped_ptr<CriticalSectionWrapper> data_cs_;