FLST Chrome (última guia selecionada do Focus) parece fazer o que você está pedindo.
Conjunto de recursos:
- Natural Tab Ordering :: when the selected-tab is closed, Focus goes to the Last-Selected-Tab
- Multiple Window Support :: private tab ordering is maintained for each window
- Tab Migration :: tabs are also tracked when dragged between windows
- Options Page :: right-click the extension icon and select Options
- (Option) Tab-flipping :: flips the current and last tab
- (Option) New Tabs :: switch to the new tab when created
- (Option) Tab Location :: place new tabs on the far-right
PS. Eu não testei isso.