Version: 56.0.2924.14 0dc503a1d29c5c8d206cec080ef65b1950451575-refs/branch-heads/2924@{#277} (64-bit)
OS: Windows(7,8,8.1,10),Linux (14.04 LTS),Mac OS X(10.11.6, 10.12.1)

What steps will reproduce the problem?
1. Launch chrome, navigate to chrome://md-settings/languages and click on iron icon besides 'English' language and observe checkbox(Offer to translate pages in this languages)
2. Now click on 'Add languages' and add two languages and again observe 'English' language checkbox behavior(Checkbox appear checked) 
3. Now remove the two added languages and again click on iron icon besides 'English' language and observe check box behavior((Checkbox appear unchecked) )

Actual: Weird behavior of 'English' language check box(Offer to translate pages in this languages) is seen after adding and removing two languages 
Expected: Weird behavior of 'English' language check box(Offer to translate pages in this languages) should not be seen after adding and removing two languages 

This is a non-regression issue, seen from M-55 series as 'Offer to translate pages in this languages checkbox' appears from build # 55.0.2869.0  

Kindly review the attached screen cast for reference.
 
 

Deleted: Actual_video.mov 4.8 MB

Actual_video.mov 4.8 MB Download