ginit.vim

GuiTabline 0
GuiLinespace 0
let g:MyFont = "Roboto Mono"
let g:FontSize = 10

exe "GuiFont! ".MyFont.":h".FontSize

function! AdjustFontSize(amount)
  let g:FontSize = g:FontSize+a:amount
  :execute "GuiFont! ".g:MyFont.":h" . g:FontSize
endfunction

noremap <C-=> :call AdjustFontSize(1)<CR>
noremap <C--> :call AdjustFontSize(-1)<CR>

Vimium

map <a-,> moveTabLeft
map <a-.> moveTabRight
unmap <<
unmap >>
unmap x
unmap X
map ZQ removeTab
map ZZ removeTab
map ZX restoreTab
map <c-s-j> previousTab
map <c-s-k> nextTab
map <c-d> scrollPageDown
map <c-u> scrollPageUp