wp-calypso/client/reader/components/icons/search-icon.jsx

export default function ReaderSearchIcon( { viewBox = '0 0 20 20' } ) {
	return (
		<svg
			className="sidebar__menu-icon sidebar_svg-search"
			height="24"
			viewBox={ viewBox }
			width="24"
			xmlns="http://www.w3.org/2000/svg"
		>
			<path d="M13 5c-3.3 0-6 2.7-6 6 0 1.4.5 2.7 1.3 3.7l-3.8 3.8 1.1 1.1 3.8-3.8c1 .8 2.3 1.3 3.7 1.3 3.3 0 6-2.7 6-6S16.3 5 13 5zm0 10.5c-2.5 0-4.5-2-4.5-4.5s2-4.5 4.5-4.5 4.5 2 4.5 4.5-2 4.5-4.5 4.5z"></path>
		</svg>
	);
}