Closes browser tabs opened by the ‘Browser` instance.
Examples:
# connect to a long-running Chrome processbrowser=Ferrum::Browser.new(url:'http://localhost:9222')browser.go_to("https://github.com/")# clean up, lest the tab stays there hanging foreverbrowser.resetbrowser.quit
206
207
208
# File 'lib/ferrum/browser.rb', line 206defresetcontexts.resetend