Move ThreadWrapper to ProcessThread in base.

webrtc/modules/video_render/windows/video_render_direct3d9.h

Index: webrtc/modules/video_render/windows/video_render_direct3d9.h
diff --git a/webrtc/modules/video_render/windows/video_render_direct3d9.h b/webrtc/modules/video_render/windows/video_render_direct3d9.h
index 8b8509ed4e218ede7b13492a68ca46547a6b7f2e..c98f08f4886531d1b74d17b760afb3459513ace9 100644
--- a/webrtc/modules/video_render/windows/video_render_direct3d9.h
+++ b/webrtc/modules/video_render/windows/video_render_direct3d9.h
@@ -19,8 +19,8 @@
 #include <Map>
 
 // Added
+#include "webrtc/base/platform_thread.h"
 #include "webrtc/modules/video_render/video_render_defines.h"
-#include "webrtc/system_wrappers/include/thread_wrapper.h"
 
 #pragma comment(lib, "d3d9.lib")       // located in DirectX SDK
 
@@ -203,7 +203,7 @@ private:
 
     CriticalSectionWrapper& _refD3DCritsect;
     Trace* _trace;
-    rtc::scoped_ptr<ThreadWrapper> _screenUpdateThread;
+    rtc::scoped_ptr<PlatformThread> _screenUpdateThread;
     EventTimerWrapper* _screenUpdateEvent;
 
     HWND _hWnd;