Why this change?
The code changes introduced in 5b91dc1844
resulted in errors being raised when `session.quit` is called when using
multiple sessions. From my debugging, this seems to be attributed to the
fact that the change introduced resulted in multiple sessions sharing
the same instance of `Selenium::WebDriver::Remote::Http::Default`. While
sharing the same instance in theory should be fine, but the problem is
that `Selenium::WebDriver::Driver` will mutate the `server_url` of the
client in `Selenium::WebDriver::Remote::Bridge`. This is problematic
because each session created by capbyara relies on a different server
URL and this mutation causes all sorts of weird errors to occur.
To reproduce the problem, run `LOAD_PLUGINS=1 rspec plugins/chat/spec/system/send_message_spec.rb:76`
locally while excluding the changes in this commit.
775dce1f13