Using grad-cam in ONNX for deployment.

Hi @jacobgil , 
This can sound dumb, but I want grad-cam as a feature in my deployment service. All the model I am using there are in ONNX format. I tried direct conversion  of gradcam to onnx, but failed as it uses back tracing of gradients. I wanted to ask if there is a way to use gradcam in onnx formatted model or if is there any way to use gradcam in deployment to edge devices?
