Bug 958003 - [Keyboard][V1.4] FxOS cannot pops up third party keyboard after process manager kills it
    -- after OOM keyboard will not get 'oninputcontextchange' at first time while keyboard app is using
    -- so can not only depens on 'oninputcontextchange' to show keyboard layouts.
Merge pull request #15242 from mpizza/Bug_958003_demo_keyboard

Bug 958003 - resizeWindow() if we receive inputContext before init, r=timdream