搜索 Webkit 实现中调用 updateLayoutIgnorePendingStylesheets 方法的代码, 得到以下可导致触发 layout 的操作：
Element: clientHeight, clientLeft, clientTop, clientWidth, focus(), getBoundingClientRect(), getClientRects(), innerText, offsetHeight, offsetLeft, offsetParent, offsetTop, offsetWidth, outerText, scrollByLines(), scrollByPages(), scrollHeight, scrollIntoView(), scrollIntoViewIfNeeded(), scrollLeft, scrollTop, scrollWidth
Frame, HTMLImageElement: height, width
Range: getBoundingClientRect(), getClientRects()
SVGLocatable: computeCTM(), getBBox()
SVGTextContent: getCharNumAtPosition(), getComputedTextLength(), getEndPositionOfChar(), getExtentOfChar(), getNumberOfChars(), getRotationOfChar(), getStartPositionOfChar(), getSubStringLength(), selectSubString()
SVGUse: instanceRoot
window: getComputedStyle(), scrollBy(), scrollTo(), scrollX, scrollY, webkitConvertPointFromNodeToPage(), webkitConvertPointFromPageToNode()
