chromium-init.js

(() => {
  'use strict';

  var script = () => {
    'use strict';

    var ublockFunc = (w=window) => {
      const scriptName = 'chromium';

      const wScriptProp = `ublock-${scriptName}-init.js`;
      if(w[wScriptProp]) return;
      w[wScriptProp] = true;

      main();

      function main(){
        const log = (w.console_ || console).log;

        var symbol = Symbol('ublock');
        var toPrim = () => '1';
        var nopf = function(){};

        var nop = proxify(nopf, {
          getPrototypeOf(){ return null; },
          setPrototypeOf(){ return nop; },
          isExtensible(){ return false; },
          preventExtensions(){ return nop; },

          getOwnPropertyDescriptor(t, prop){
            if(prop === 'prototype')
              return Object.getOwnPropertyDescriptor(t, prop);

            return {
              writable: false,
              configurable: true,
            };
          },

          defineProperty(){ return nop; },
          has(){ return nop; },

          get(t, prop){
            if(prop === Symbol.toPrimitive) return toPrim;
            return nop;
          },

          set(){ return true; },
          deleteProperty(){ return nop; },
          ownKeys(){ return ['prototype']; },
          apply(){ return nop; },
          construct(){ return nop; },
        });

        ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

        if(w === top){
          const f = () => {
            if(!('_shadows' in w))
              return setTimeout(f);

            for(const e of qsa('video[controls]'))
              e.removeAttribute('controls');

            setTimeout(f, 1e3);
          };

          f();
        }

        function qsa(a){
          const set = new Set();

          for(const e of document.querySelectorAll(a))
            set.add(e);

          for(const sr of w._shadows)
            for(const e of sr.querySelectorAll(a))
              set.add(e);

          return set;
        }
        
        ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

        function proxify(obj, prop, traps=null){
          var b = traps !== null;
          var proxy, t;

          if(b){
            t = obj[prop];
          }else{
            t = obj;
            traps = prop;
          }

          proxy = new w.Proxy(t, traps);
          proxy[symbol] = `${t}`;

          if(b){
            obj[prop] = proxy;
          }

          return proxy;
        }
      }
    };

    ublockFunc();
  };

  var code = `(${script})();`;
  var elem = document.documentElement;

  (() => {
    const script = document.createElement('script');
    script.textContent = code;
    document.documentElement.appendChild(script);
    script.remove();
  })();
})();