Automatically fire AX events on Mac based on tree changes

chrome/renderer/extensions/automation_internal_custom_bindings.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_RENDERER_EXTENSIONS_AUTOMATION_INTERNAL_CUSTOM_BINDINGS_H_
 #define CHROME_RENDERER_EXTENSIONS_AUTOMATION_INTERNAL_CUSTOM_BINDINGS_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "chrome/common/extensions/api/automation.h"
@@ skipping 141 matching lines @@
                             bool is_active_profile);
   void OnAccessibilityLocationChange(
       const ExtensionMsg_AccessibilityLocationChangeParams& params);
 
   void UpdateOverallTreeChangeObserverFilter();
 
   // AXTreeDelegate implementation.
   void OnNodeDataWillChange(ui::AXTree* tree,
                             const ui::AXNodeData& old_node_data,
                             const ui::AXNodeData& new_node_data) override;
-  void OnTreeDataChanged(ui::AXTree* tree) override;
+  void OnTreeDataChanged(ui::AXTree* tree,
+                         const ui::AXTreeData& old_tree_data,
+                         const ui::AXTreeData& new_tree_data) override;
   void OnNodeWillBeDeleted(ui::AXTree* tree, ui::AXNode* node) override;
   void OnSubtreeWillBeDeleted(ui::AXTree* tree, ui::AXNode* node) override;
   void OnNodeWillBeReparented(ui::AXTree* tree, ui::AXNode* node) override;
   void OnSubtreeWillBeReparented(ui::AXTree* tree, ui::AXNode* node) override;
   void OnNodeCreated(ui::AXTree* tree, ui::AXNode* node) override;
   void OnNodeReparented(ui::AXTree* tree, ui::AXNode* node) override;
   void OnNodeChanged(ui::AXTree* tree, ui::AXNode* node) override;
   void OnAtomicUpdateFinished(ui::AXTree* tree,
                               bool root_changed,
                               const std::vector<Change>& changes) override;
@@ skipping 14 matching lines @@
   std::vector<int> text_changed_node_ids_;
   ExtensionBindingsSystem* bindings_system_;
   bool should_ignore_context_;
 
   DISALLOW_COPY_AND_ASSIGN(AutomationInternalCustomBindings);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_AUTOMATION_INTERNAL_CUSTOM_BINDINGS_H_