WebRtc_Word32 -> int32_t in system_wrappers

BUG=314

Review URL: https://webrtc-codereview.appspot.com/1301004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3791 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/system_wrappers/source/trace_win.h b/webrtc/system_wrappers/source/trace_win.h
index 5d599f0..1a87107 100644
--- a/webrtc/system_wrappers/source/trace_win.h
+++ b/webrtc/system_wrappers/source/trace_win.h
@@ -23,14 +23,13 @@
   TraceWindows();
   virtual ~TraceWindows();
 
-  virtual WebRtc_Word32 AddTime(char* trace_message,
-                                const TraceLevel level) const;
+  virtual int32_t AddTime(char* trace_message, const TraceLevel level) const;
 
-  virtual WebRtc_Word32 AddBuildInfo(char* trace_message) const;
-  virtual WebRtc_Word32 AddDateTimeInfo(char* trace_message) const;
+  virtual int32_t AddBuildInfo(char* trace_message) const;
+  virtual int32_t AddDateTimeInfo(char* trace_message) const;
  private:
-  volatile mutable WebRtc_UWord32 prev_api_tick_count_;
-  volatile mutable WebRtc_UWord32 prev_tick_count_;
+  volatile mutable uint32_t prev_api_tick_count_;
+  volatile mutable uint32_t prev_tick_count_;
 };
 
 }  // namespace webrtc