Force Flash Wmode GPU

Force flash video playback to use wmode=gpu to allow hardware acceleration, based on Mikhoul's userscripts.
当前为 2017-02-13 提交的版本，查看最新版本。
换行
// ==UserScript==
// jshint esversion: 6
// @name Force Flash Wmode GPU
// @namespace edsgerlin.com
// @description Force flash video playback to use wmode=gpu to allow hardware acceleration, based on Mikhoul's userscripts. 
// @author      Chin-Yuan Lin
// @version     0.0.1
// @include http://www.youtube.com/watch*
// @include http://youtube.com/watch*
// @include https://www.youtube.com/watch*
// @include https://youtube.com/watch*
// @include	http://dailymotion.com*
// @include	http://www.dailymotion.com*
// @include	https://dailymotion.com*
// @include	https://www.dailymotion.com*
// @include	http://vimeo.com*
// @include	http://www.vimeo.com*
// @include	https://vimeo.com*
// @include	https://www.vimeo.com*
// @include	http://metacafe.com*
// @include	http://www.metacafe.com*
// @include	https://metacafe.com*
// @include	https://www.metacafe.com*
// @include	http://funnyordie.com*
// @include	http://www.funnyordie.com*
// @include	https://funnyordie.com*
// @include	https://www.funnyordie.com*
// @include	http://videojug.com*
// @include	http://www.videojug.com*
// @include	https://videojug.com*
// @include	https://www.videojug.com*
// @include	http://blip.tv*
// @include	http://www.blip.tv*
// @include	https://blip.tv*
// @include	https://www.blip.tv*
// @include	http://vevo.com*
// @include	http://www.vevo.com*
// @include	https://vevo.com*
// @include	https://www.vevo.com*
// @include http://megavideo.com/*v=*
// @include	http://www.megavideo.com/*v=*
// @include	http://megaporn.com/video/*v=*
// @include	http://www.megaporn.com/video/*v=*
// @include	http://facebook.com/*video*
// @include	http://www.facebook.com/*video*
// @include	http://www.collegehumor.com/video/*
// @include	http://redtube.com/*
// @include	http://www.redtube.com/*
// @include	http://youporn.com/*watch*
// @include	http://www.youporn.com/*watch*
// @include	http://pornhub.com/*video*
// @include	http://www.pornhub.com/*video*
// @include	http://pornotube.com/*media*
// @include	http://www.pornotube.com/*media*
// @include	http://pornotube.com/*m=*
// @include	http://www.pornotube.com/*m=*
// @include	http://xvideos.com/*video*
// @include	http://www.xvideos.com/*video*
// @include	http://www.keezmovies.com/*
// @include	http://keezmovies.com/*
// @include	http://www.tube8.com/*
// @include	http://www.twitch.tv/*
// @include http://*.bilibili.com/*
// @include http://*.acfun.cn/*
// @include http://www.iqiyi.com/*
// @include https://v.qq.com/*
// @include http://v.qq.com/*
// @grant none
// ==/UserScript==

(() => {
    'use strict';

    const targetNode = document.body;
    const matchSelector = "object[type='application/x-shockwave-flash']";
    const onMatch = node => {
        const wmodeParam = node.querySelector("object>param[name='wmode']");
        if(wmodeParam){
            wmodeParam.value="gpu";
            return true;
        }
    };
    const MutationObserver=window.MutationObserver;
    // Polyfill for Element.matches().
    if (!Element.prototype.matches) {
        Element.prototype.matches =
            Element.prototype.matchesSelector ||
            Element.prototype.mozMatchesSelector ||
            Element.prototype.msMatchesSelector ||
            Element.prototype.oMatchesSelector ||
            Element.prototype.webkitMatchesSelector ||
            s => {
            const matches = (this.document || this.ownerDocument).querySelectorAll(s);
            let i = matches.length;
            while (--i >= 0 && matches.item(i) !== this) {}
            return i > -1;
        };
    }
    const observer = new MutationObserver(mutations => {
        mutations.some(mutation => {
            const addedNodes=Array.from(mutation.addedNodes||[]);
            return addedNodes.some(node => {
                if(node.nodeType!==Node.ELEMENT_NODE){
                    return;
                }
                else if(!node.matches(matchSelector)) {
                    return;
                }
                return onMatch(node);
            });
        });
    });
    const options={childList: true, subtree: true};
    observer.observe(targetNode, options);
})();
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