Bug 1025725 - Part 1: Give nsXBLPrototypeResources::mRuleProcessor a more concrete type. r=bzbarsky
Bug 1025725 - Part 2: Encapsulate nsXBLPrototypeResources::mRuleProcessor. r=bzbarsky
Bug 1025725 - Part 3: Encapsulate nsXBLPrototypeResources::mStyleSheetList. r=bzbarsky