Bug 1022229 - Hoist GetAppStatus into a static method on nsScriptSecurityManager. r=bz
Bug 1022229 - Let Null Principals have App IDs and mozBrowser status. r=bz
Bug 1022229 - Borrow App ID and mozBrowser-ness when creating sandbox null principals. r=bz
Bug 1022229 - Tests. r=bz