Bug 1432749 - Part 2: Introduce WindowFeature class with spec-compliant tokenization, and use it both in nsGlobalWindowOuter and nsWindowWatcher. r=smaug

WindowFeature provides the tokenization and access to the map.
This changes the following behavior:
  * "*" value is removed, given it's unused.
    * Default width and default height handling is removed,
      given there's no callsites
  * Some chrome-priv feature handling becomes stricter:
    * All substring match is removed and directly checks the item in the map

Also, fixed noopener=0 and noreferrer=0 options to be handled properly.

Differential Revision: https://phabricator.services.mozilla.com/D67725

--HG--
extra : moz-landing-system : lando