Touching multiple web elements simultaneously brings out area with magnification for clarification of intended target – name of feature?
It's enable-link-disambiguation-popup.


  It’s a handy feature and is now available in Chrome OS. 
  
  Since this is experimental, you’ll have to enable it, which is an easy process. 
  
  Simply type chrome://flags in the Chrome OS browser and find the enable-link-disambiguation-popup option. 
  
  Enable it and restart the browser to activate the feature.


https://gigaom.com/2014/12/23/a-key-touch-feature-from-android-is-availble-in-chrome-os/