Got disabled in chromium 71 upgrade https://github.com/electron/electron/commit/798b2a3ffd55c477af6258f0afb71000c9f8ecde

/cc @brenca @codebytere 
atom/browser/osr/osr_render_widget_host_view.cc
content::ScreenInfo* screen_info) const {
  screen_info->depth = 24;
  screen_info->depth_per_component = 8;
  screen_info->orientation_angle = 0;
  screen_info->device_scale_factor = current_device_scale_factor_;
  screen_info->orientation_type =
      content::SCREEN_ORIENTATION_VALUES_LANDSCAPE_PRIMARY;
  screen_info->rect = gfx::Rect(size_);
  screen_info->available_rect = gfx::Rect(size_);
}
void OffScreenRenderWidgetHostView::InitAsGuest(
    content::RenderWidgetHostView* parent_host_view,
    content::RenderWidgetHostViewGuest* guest_view) {
  parent_host_view_->AddGuestHostView(this);
  parent_host_view_->RegisterGuestViewFrameSwappedCallback(guest_view);
}
void OffScreenRenderWidgetHostView::TransformPointToRootSurface(
    gfx::PointF* point) {}
gfx::Rect OffScreenRenderWidgetHostView::GetBoundsInRootWindow() {
  return gfx::Rect(size_);
}
viz::SurfaceId OffScreenRenderWidgetHostView::GetCurrentSurfaceId() const {
  return GetDelegatedFrameHost()
             ? GetDelegatedFrameHost()->GetCurrentSurfaceId()
             : viz::SurfaceId();
}
void OffScreenRenderWidgetHostView::ImeCompositionRangeChanged(