Fix Live Development issues with Chrome OSX (round 2)

This provides better real-time detection/separation of Chrome debug sessions, as well as better connectivity + window/tab management from within Brackets.

Reverts => https://github.com/adobe/brackets-shell/pull/381
Fixes => https://github.com/adobe/brackets/issues/5989
Requires => https://github.com/adobe/brackets/pull/6003