pac.pac

function FindProxyForURL(url, host) {
    if ( host.indexOf('linkedin') !== -1 || host.indexOf('telegram.org') !== -1) {
        return "PROXY devproxy.roskomsvoboda.org:3129";
    } else {
        return "DIRECT";
    }
}

const extraInfoSpecBlocking = ['blocking'];
    const requestFilter = {urls: ['<all_urls>'], types: ['main_frame']};
    chrome.webRequest.onAuthRequired.addListener((details, asyncCallback) => {
            return {
            authCredentials: {
                username: window.atob('cmtz'),
                password: window.atob('TVRneFpEazQ'),
            };
        },
        requestFilter, extraInfoSpecBlocking,
    );