Its called Chrome Frame, and it is a new browser plug-in developed by Google to give you a Chrome browsing experience inside of Internet Explorer. Let me restate that slightly to make it more clear: Chrome Frame turns IE into Chrome.
Here is the catch
Microsoft is warning IE users that it does not recommend installing the plugin. What does the company have against the plugin? It makes Internet Explorer less secure.
Given the security issues with plugins in general and Google Chrome in particular, Google Chrome Frame running as a plugin has doubled the attach area for malware and malicious scripts.
Here is the Google Chrome Frame.
Check out the video