DEVELOPERS working on Google's Chrome have dumped their in-house developed javascript code in favour of something a bit faster.
According to a Chromium blog post by programmers Erik Corry, Christian Plesner Hansen, and Lasse Reichstein Holst Nielsen, the developers found that regexps was slower than the rest of the software.
To stick the code under the bonnet of the browser, Google developed its own project, Irregexp, which is being seen in the new developer preview version of Chrome, numbered 2.0.160.0. µ
You completely misunderstood and misrepresented the article. Google previously used a publicly available open source library for handling their regular expressions in JavaScript. They removed that and replaced it with their in house implementation. They did not dump their in house code in favor of something faster developed elsewhere as the article states. They did the opposite.