test torchvision ops internally

Reviewed By: theschnitz

Differential Revision: D26241658

fbshipit-source-id: 2f743015f0c4e935d46713c4bf22f45d99ad495b

Author: ppwwyyxx

tools/deploy/torchscript_traced_mask_rcnn.cpp

@@ -10,6 +10,7 @@
 
 // only needed for export_method=tracing
 #include <torchvision/vision.h> // @oss-only
+// @fb-only: #include <torchvision/csrc/vision.h>
 
 using namespace std;