Prune invisible views from the desktop automation tree

ui/views/accessibility/ax_widget_obj_wrapper.cc

Index: ui/views/accessibility/ax_widget_obj_wrapper.cc
diff --git a/ui/views/accessibility/ax_widget_obj_wrapper.cc b/ui/views/accessibility/ax_widget_obj_wrapper.cc
index 279e269c73ea38024df45689ca0cdb6f47b8b5ec..628b82fac76137d73f46c4f9648485d52f618694 100644
--- a/ui/views/accessibility/ax_widget_obj_wrapper.cc
+++ b/ui/views/accessibility/ax_widget_obj_wrapper.cc
@@ -30,6 +30,9 @@ AXAuraObjWrapper* AXWidgetObjWrapper::GetParent() {
 
 void AXWidgetObjWrapper::GetChildren(
     std::vector<AXAuraObjWrapper*>* out_children) {
+  if (!widget_->IsVisible() || !widget_->GetRootView()->visible())
+    return;
+
   out_children->push_back(
       AXAuraObjCache::GetInstance()->GetOrCreate(widget_->GetRootView()));
 }