Wide color gamut support for Postprocessors

Description

I want to load facebook logo image with fresco but when I am setting post processor, image not showing, looking to source code tells that fresco can not handle 16 bit png images, but this only happens when using post processor.

Reproduction

SimpleDraweeView image = findViewById(R.id.YOUR_SIMPLE_DRAWEE_VIEW);
String url = "https://www.facebook.com/images/fb_icon_325x325.png";

ImageRequest imageRequest = ImageRequestBuilder.newBuilderWithSource(Uri.parse(url))
        .setPostprocessor(new RoundAsCirclePostprocessor())
        .build();

PipelineDraweeController controller = (PipelineDraweeController) Fresco.newDraweeControllerBuilder()
        .setImageRequest(imageRequest)
        .setOldController(image.getController())
        .build();

image.setController(controller);

Additional Information

• Fresco version: 1.9.0
• Platform version: Android 8.0, One plus 5T