Bug 990812 - Add nsIDOMChromeWindow.getGroupMessageManager() API r=smaug
Bug 990812 - Let the frame loader use a group message manager as the parent when it detects that a frame belongs to a certain group r=smaug
Bug 990812 - Restrict sessionstore, tabview, and browser frame scripts to tabbrowser browsers
Bug 990812 - Make a11y jsat utils handle group message managers r=yzen
Bug 990812 - Tests for group message managers r=smaug