Function handler

apps/desktop/scripts/desktop-display-transport-benchmark.js:408–412

(params)

			reject(new Error(`Timed out waiting for ${method}`));
		}, timeoutMs);
		function handler(params) {
			clearTimeout(timer);
			cdp.off(method, handler);
			resolve(params);
		}
		cdp.on(method, handler);
	});
}