chromium/chrome/browser/resources/lens/overlay/sparkles.svg

<svg xmlns="http://www.w3.org/2000/svg" width="400" height="400" fill="none" viewBox="0 0 400 400">
    <defs>
        <filter id="sparkles" color-interpolation-filters="auto">
        <feTurbulence id="turbulance" baseFrequency="0.5" numOctaves="4"></feTurbulence>
        <feColorMatrix values="
            0 0 0 1 -.4
            0 0 0 1 -.3
            0 0 0 1 -.5
            0 0 0 0 1"></feColorMatrix>
        <feColorMatrix values="
            0 0 0 0 1
            0 0 0 0 1
            0 0 0 0 1
            1 1 1 0 0" result="grain"></feColorMatrix>
        </filter>
    </defs>
    <rect xmlns="http://www.w3.org/2000/svg" width="400px" height="400px"
    filter="url(#sparkles)" fill="black"/>
</svg>