If setrlimit fails, let's just report the error rather than failing to
start the browser at all.
(cherry picked from commit cf25a06d6715c8ef699973db7634016f8659c9d7)
The default limit (at least on Linux) causes us to run out of file
descriptors at around 15 tabs. Increase this limit to 8k. This is a
rather arbitrary number, but matches the limit set by Chrome.
(cherry picked from commit d58a8b514647a1137d76a1d601f0c325a51f29b3;
amended to also update Userland/Applications/Browser/main.cpp)
This allows main UI processes created while there is a currently
running one to request a new tab or a new window with the initial urls
provided on the command line. This matches (almost) the behavior of
Chromium and Firefox.
Add a new IPC protocol between two UI processes. The main UI process
will create an IPC server socket, while secondary UI processes will
connect to that socket and send over the URLs and action it wants the
main process to take.
