Use of drawWindow method from CanvasRenderingContext2D is deprecated. Use tabs.captureTab extensions API instead https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/tabs/captureTab
已弃用 CanvasRenderingContext2D 中的 drawWindow 方法。请改用 tabs.captureTab 的扩展 API https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/tabs/captureTab