Google's Chrome browser is a great many things but one thing it is not, depending on you ask, is lightweight. Of course, those claims have sparked many a browser war. But whether you adhere to the church of Firefox or the religion of Chrome (or maybe even the new cult of Edge), there will always be room for improvement. In version 45 of Google Chrome, those improvements are promises in droves. Or really in three main ways that would actually matter the most to users.