Bug 1416384 - Part 1: Copy nsGlobalWindow.{h,cpp} to nsGlobalWindow{Inner,Outer}.{h,cpp}, r=smaug

--HG--
rename : dom/base/nsGlobalWindow.cpp => dom/base/nsGlobalWindowInner.cpp
rename : dom/base/nsGlobalWindow.h => dom/base/nsGlobalWindowInner.h
rename : dom/base/nsGlobalWindow.cpp => dom/base/nsGlobalWindowOuter.cpp
rename : dom/base/nsGlobalWindow.h => dom/base/nsGlobalWindowOuter.h
extra : rebase_source : e29e0abbbc4898b9d50c05c68ada2f1561678cd1