If it’s not clear from the article, HTTPS is required for all .app domains, which Google accomplished by adding the .app TLD to the default chrome HSTS preload list. Interestingly that will only ensure HTTPS only when using a browser with HSTS enabled with a preload list that includes the .app TLD. Therefore non-web code, or code in browsers without the TLD in the HSTS preload list, will be able to make HTTP requests…
What are examples of Google's use of EEE?
[1] https://en.wikipedia.org/wiki/Embrace,_extend,_and_extinguis...