The V3 approach obliterates this race condition by hooking addSourceBuffer at the MediaSource.prototype level, I intercept the creation of every SourceBuffer. The moment a buffer is created and returned, I immediately install a hooked appendBuffer directly on that specific instance; before any page code can even see the instance, let alone cache a reference to its methods. The hooked appendBuffer is installed as an own property of the instance, which takes precedence over the prototype chain. There is no window for fermaw to cache the original. The hook is always first.
Полина Кислицына (Редактор)
，更多细节参见下载安装 谷歌浏览器 开启极速安全的 上网之旅。
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（六）作出处罚决定的公安机关的名称和作出决定的日期。