Inline utility functions to reduce a promise stack size.
- Integrate Method lib
- "unfreeze" classes in heritage - fix bug 827400 too
Merge pull request #848 from ZER0/method

Bug 837494 - re-implement `contentStyle*` using the new nsIDOMWindowUtils methods r=@gozala
Merge pull request #844 from Gozala/bug/promise-stack@842347

Bug 842347 - Inline utility functions to reduce a promise stack size. r=@Mossop
Fix regression introduced by 62ce3339c514c1fc097ff355957081c0027f3bea a=@gozala
Bug 834960 - pwpb update page-mod module to ignore private windows.