// This is inspired in runAfterLayoutAndPaint() from // third_party/blink/web_tests/resources/run-after-layout-and-paint.js. function runAfterLayoutAndPaint(callback) { // See http://crrev.com/c/1395193/10/third_party/blink/web_tests/http/tests/resources/run-after-layout-and-paint.js // for more discussions. requestAnimationFrame(function() { requestAnimationFrame(function() { callback(); }); }); }