*Note: Currently electrolysis requires libxul, so do not set --disable-libxul in your mozconfig.
To run the remote-tab demo, set the following pref using about:config: dom.ipc.tabs.enabled: true and then run Firefox with
cd ''$objdir''/dist/bin
./firefox -chrome ''$srcdir''chrome:/dom/ipcglobal/content/test-ipc.xul