Complete live region support in ChromeVox Next.

chrome/renderer/extensions/automation_internal_custom_bindings.h

Index: chrome/renderer/extensions/automation_internal_custom_bindings.h
diff --git a/chrome/renderer/extensions/automation_internal_custom_bindings.h b/chrome/renderer/extensions/automation_internal_custom_bindings.h
index 94e659db49367975c4e500cf5d63cbac24eb091c..23ba27515c9fcb3ba6548898887a47ece3afbe1f 100644
--- a/chrome/renderer/extensions/automation_internal_custom_bindings.h
+++ b/chrome/renderer/extensions/automation_internal_custom_bindings.h
@@ -74,6 +74,10 @@ class AutomationInternalCustomBindings : public ObjectBackedNativeHandler,
   void DestroyAccessibilityTree(
       const v8::FunctionCallbackInfo<v8::Value>& args);
 
+  // Set what types of tree change events should be sent to the client.
+  void SetTreeChangeObserverMask(
+      const v8::FunctionCallbackInfo<v8::Value>& args);
+
   void RouteTreeIDFunction(const std::string& name,
                            void (*callback)(v8::Isolate* isolate,
                                             v8::ReturnValue<v8::Value> result,
@@ -177,6 +181,7 @@ class AutomationInternalCustomBindings : public ObjectBackedNativeHandler,
   base::hash_map<ui::AXTree*, TreeCache*> axtree_to_tree_cache_map_;
   scoped_refptr<AutomationMessageFilter> message_filter_;
   bool is_active_profile_;
+  api::automation::TreeChangeObserverMask tree_change_observer_mask_;
 
   DISALLOW_COPY_AND_ASSIGN(AutomationInternalCustomBindings);
 };