Return the default client for use with a newly created browser window. If
null is returned the browser will be unmanaged (no callbacks will be
executed for that browser) and application shutdown will be blocked until
the browser window is closed manually. This function is currently only
used with the chrome runtime.
Return the default client for use with a newly created browser window. If null is returned the browser will be unmanaged (no callbacks will be executed for that browser) and application shutdown will be blocked until the browser window is closed manually. This function is currently only used with the chrome runtime.