Steps to reproduce the problem:
Chrome for Android lacks a feature every other version of Chrome has (also, Firefox for Android and Safari for iPhone have it too) : tapping-and-holding on the system back button (because Chrome uses the Android system back button instead of having an in-app back button like it does in Chrome for iPhone) should show the history of the tab you are on. 

What is the expected behavior?

What went wrong?
This is a nice and useful little feature, that's why it's in every other version of Chrome and every other browser too. This little feature needs to be brought to Chrome for Android. If Firefox for Android can do this, than so can Chrome. Also, now with Chrome Home, it makes more sense than ever (because the Android system back button is at the bottom of the screen)

Did this work before? No 

Chrome version: 64  Channel: canary
OS Version: 7.1
Flash Version: