Makes Firefox open places pages (Bookmarks, Downloads, History) in tabs instead of new windows.
- PlacesUIUtils.jsm - contains the list of valid left pane container hierarchies used by PlacesOrganizer.
- browser-places.js - contains the original
PlacesCommandHook.showPlacesOrganizer()method. - browser.js - contains the original
BrowserDownloadsUI()method.
This will not be available as a WebExtension because "In Firefox, you can't open (using tabs.create), or navigate to (using tabs.update) privileged URLs" (see tabs).