private void updateBackgroundDrawableAttrs(boolean convert) {
        if (mutateBackground) {
            if (convert) {
                mBackgroundDrawable = RoundedDrawable.fromDrawable(mBackgroundDrawable);
            }
            updateAttrs(mBackgroundDrawable);
        }
    }
Controls how the image should be resized or moved to match the size
of this ImageView.

@param scaleType The desired scaling mode.
@attr ref android.R.styleable#ImageView_scaleType
sample/src/main/java/com/etiennelawlor/quickreturn/views/RoundedImageView.java