Chrome Frame -- a secure plug-in created by Google and released in 2009, brings the ability in Internet Explorer that loads pages using Chrome's rendering engine of the web page requests.
In short, Chrome Frame provided a modern engine to Internet Explorer 8 (and other older versions) lacking HTML5 -- to allow developers to bring better experiences to more users, even those who were unable to move to a more capable browser.
As most people are now using modern browsers that support the majority of the latest web technologies, while the usage of legacy browsers is declining significantly and newer browsers stay up to date automatically. Chrome Frame is no longer useful, thus Google announced to discontinue it and "cease support and updates for the product in January 2014".
"Given these factors we've decided to retire Chrome Frame, and will cease support and updates for the product in January 2014," Google stated.
Developer whose app points users to Chrome Frame, are advised to prompt visitors to upgrade to a modern browser. You can learn more about these changes in our FAQ.
IT administrator can check out Chrome for Business coupled with Legacy Browser Support, which allows employees to switch seamlessly between Chrome and another browser. In addition, IT admins can also configure 100+ policies to make Chrome fit their needs.