Electrom will-download pause function

1、code from github

url-link:

   https://github.com/electron/electron/issues/7712

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// to store downloadItems var downloadItems = [];   ipcMain.on('dowloadFiles', function(evt, options) {     // ...     if(options.command === 'stopDownload') {            var item = getDownloadItem(options.url); // fetch item from downloadItems array            item.pause();            return;       }     // ... });   mainWindow.webContents.session.on('will-download', function(event, item, webContents) {     // ...         // store the download item, so that we can call item.pause/resume in a       downloadItems.push(item);       // ... });