Keep track of accessibility focus across windows.

chrome/browser/ui/aura/accessibility/automation_manager_aura.cc

Index: chrome/browser/ui/aura/accessibility/automation_manager_aura.cc
diff --git a/chrome/browser/ui/aura/accessibility/automation_manager_aura.cc b/chrome/browser/ui/aura/accessibility/automation_manager_aura.cc
index 0c40a5a92a52211385b65a25ed62c540a096d479..1448ac315c68830f4b49da9dc5711ea619c02dd4 100644
--- a/chrome/browser/ui/aura/accessibility/automation_manager_aura.cc
+++ b/chrome/browser/ui/aura/accessibility/automation_manager_aura.cc
@@ -135,6 +135,8 @@ void AutomationManagerAura::ResetSerializer() {
 void AutomationManagerAura::SendEvent(BrowserContext* context,
                                       views::AXAuraObjWrapper* aura_obj,
                                       ui::AXEvent event_type) {
+  ui::AXNodeData temp1;
+  aura_obj->Serialize(&temp1);

[David Tseng, 2016/01/28 02:00:56]

nit: Unused/remove.

[dmazzoni, 2016/01/30 00:02:41]

Done.

   if (processing_events_) {
     pending_events_.push_back(std::make_pair(aura_obj, event_type));
     return;
@@ -143,6 +145,13 @@ void AutomationManagerAura::SendEvent(BrowserContext* context,
 
   ExtensionMsg_AccessibilityEventParams params;
   current_tree_serializer_->SerializeChanges(aura_obj, &params.update);
+
+  // Make sure the focused node is serialized.
+  views::AXAuraObjWrapper* focus =
+      views::AXAuraObjCache::GetInstance()->GetFocus();
+  if (focus)
+    current_tree_serializer_->SerializeChanges(focus, &params.update);
+
   params.tree_id = 0;
   params.id = aura_obj->GetID();
   params.event_type = event_type;