Links in Gmail won't open in Chrome iPhone 7
iOS 10.1.1
Gmail 5.0.3
Chrome 54.0.2840.91  

When trying to open a link directly within the gmail app, it opens in safari instead of chrome. This used work just fine until the latest update of gmail. 

I looked in the gmail settings under google apps, to use the app instead of the browser. There is no option for Chrome where I imagine it should be.   

I can't find any other option to make chrome the default browser instead of safari.  

Help?

UPDATE: As of 11/26/2016, the problem seems to have been fixed. Links from my gmail app open up in chrome again.
iOS 10 isn't the problem - the "old" gmail app still opened links in chrome well after updating to iOS 10. This didn't become an issue until updating to Gmail's version 5 that this became an issue.