WeChat Messenger for Chrome
More About WeChat Messenger
Please note that using this application, WeChat web is loaded in a sandboxed window which has no interaction with your browser session. You will need to go with the QR-Code verification in order to use the application.
To clear the history of the application, you can simply remove and re-install it in your Chrome browser. It will delete all the cookies associated to this application. This method is useful if you are on a guest machine and dont want to leave a track.
Note that the primary purpose of this application is to provide an easier way to access the popular WeChat client either on Chrome book where there is no official client or on machines where the official client is not installed. There is no intention on pretending this is an official application