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
size_ = size;
  SynchronizeVisualProperties();
}
void OffScreenRenderWidgetHostView::SetBounds(const gfx::Rect& new_bounds) {
  SetSize(new_bounds.size());
}
gfx::NativeView OffScreenRenderWidgetHostView::GetNativeView() const {
  return gfx::NativeView();
}
gfx::NativeViewAccessible
OffScreenRenderWidgetHostView::GetNativeViewAccessible() {
  return gfx::NativeViewAccessible();
}
ui::TextInputClient* OffScreenRenderWidgetHostView::GetTextInputClient() {
  return nullptr;
}
void OffScreenRenderWidgetHostView::Focus() {}
bool OffScreenRenderWidgetHostView::HasFocus() const {
  return false;
}
bool OffScreenRenderWidgetHostView::IsSurfaceAvailableForCopy() const {