Replaces New 2015 Google Search Favicon in Browser Tabs, Address Bar, Bookmarks
// ==UserScript==
// @name Revert to Google's Old 2012-2015 Favicon
// @version 3.25
// @author R. Schneider
// @namespace https://greasyfork.org/en/users/15044-r-schneider
// @description Replaces New 2015 Google Search Favicon in Browser Tabs, Address Bar, Bookmarks
// @icon https://greasyfork.org/system/screenshots/screenshots/000/002/575/original/Google_Favicon_%282012_-_2015%29.png?1447968978
// @include http*://www.google.*
// @include http*://webcache.googleusercontent.*
// @include http*://images.google.*
// @include http*://google.com/photos*
// @include http*://books.google.*
// @include http*://support.google.*
// @include http*://accounts.google.*
// @include http*://myaccount.google.*
// @include http*://aboutme.google.*
// @include http*://googleblog.blogspot.*
// @include http*://cse.google.*
// @exclude http*://www.google.com/cloudprint*
// @exclude http*://www.google.com/calendar*
// @exclude http*://www.google.com/intl/*/drive*
// @exclude http*://www.google.com/earth*
// @exclude http*://www.google.com/finance*
// @exclude http*://www.google.com/maps*
// @exclude http*://www.google.com/voice*
// @grant none
// @support rschneider@engineer.com
// @license CC BY-NC 4.0 License (Creative Commons Attribution, NonCommercial 4.0 International) - http://creativecommons.org/licenses/by-nc/4.0/
// ==/UserScript==
var head = document.getElementsByTagName('head')[0];
var icon = document.createElement('link');
icon.setAttribute('type', 'image/x-icon');
icon.setAttribute('rel', 'icon');
icon.setAttribute('href', 'data:image/x-icon;base64,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');
head.appendChild(icon);