flutter/engine/web_ui does not implement ImageFilter.matrix #45213
Description
The web version of ImageFilter does have an implementation of ImageFilter.blur which is the more commonly used filter, but it throws an UnimplementedError in the constructor/factory for ImageFilter.matrix:
ImageFilter.matrix(Float64List matrix4,
{FilterQuality filterQuality = FilterQuality.low}) {
// TODO(flutter_web): add implementation.
throw UnimplementedError(
'ImageFilter.matrix not implemented for web platform.');
// if (matrix4.length != 16)
// throw ArgumentError('"matrix4" must have 16 entries.');
}