This tutorial enables you to add any number of Google web fonts to a drop down list of web safe fonts on the 3rd row of your TinyMce editor like this:
The above image shows the Lato font has been added to the list of browser safe fonts supported by all browsers.
The 1st step is to install the Fonts plugin.
Then you simply add the following PHP code from the download folder to the end of your child themes functions.php file:
Register or login to access the download folder :