if you wanna some High Frequency chrome shortcut using by keyboard, I really recommend you VimiumC, it is an improved version of Vimium.
install here:
https://chrome.google.com/webstore/detail/vimium-c-all-by-keyboard/hfjbmagddngcpeloejdejnfgbamkjaeg
source and issue here:
https://github.com/gdh1995/vimium-c

- it is so easy to set shortcut to control your chrome, like
map <c-w> closeOtherTabs
combination Ctrl+W to the command
"Close Other Tabs"
- and key "z" and "c" made by myself for go left and
right tab
- and key "s" also made by myself for selected words on
webpage for Google search in another tab
- VimiumC already set key "x" as close tab and "X" as re-open closed tab by default
So convenient, simple and fast, all in your fingers
but, the bad part is, VimiumC can not run on chrome safe page, like "chrome://
" and "https://chrome.google.com/
" or blank page and unloaded pages which need javascript