Add a treeChange type to Automation

chrome/renderer/extensions/automation_internal_custom_bindings.cc

Index: chrome/renderer/extensions/automation_internal_custom_bindings.cc
diff --git a/chrome/renderer/extensions/automation_internal_custom_bindings.cc b/chrome/renderer/extensions/automation_internal_custom_bindings.cc
index 826859edb42390cdf33ddb20fa405a2085ebf4ae..1a4246769d583743e21da56c84559d417edc59bc 100644
--- a/chrome/renderer/extensions/automation_internal_custom_bindings.cc
+++ b/chrome/renderer/extensions/automation_internal_custom_bindings.cc
@@ -989,6 +989,14 @@ void AutomationInternalCustomBindings::OnAccessibilityEvent(
   args->Set(0U, event_params);
   context()->DispatchEvent("automationInternal.onAccessibilityEvent", args);
 }
+void AutomationInternalCustomBindings::OnNodeDataWillChange(
+    ui::AXTree* tree,
+    const ui::AXNodeData& old_node_data,
+    const ui::AXNodeData& new_node_data) {
+  if (old_node_data.GetStringAttribute(ui::AX_ATTR_NAME) !=
+      new_node_data.GetStringAttribute(ui::AX_ATTR_NAME))
+    text_changed_node_ids_.push_back(new_node_data.id);
+}
 
 void AutomationInternalCustomBindings::OnTreeDataChanged(ui::AXTree* tree) {}
 
@@ -1050,6 +1058,12 @@ void AutomationInternalCustomBindings::OnAtomicUpdateFinished(
         break;
     }
   }
+
+  for (size_t i = 0; i < text_changed_node_ids_.size(); ++i) {

[Devlin, 2016/02/22 18:21:45]

nit: prefer range-based (C++11-style) for-loops.

[David Tseng, 2016/02/22 22:55:49]

Done.

+    SendTreeChangeEvent(api::automation::TREE_CHANGE_TYPE_TEXTCHANGED, tree,
+                        tree->GetFromId(text_changed_node_ids_[i]));
+  }
+  text_changed_node_ids_.clear();
 }
 
 void AutomationInternalCustomBindings::SendTreeChangeEvent(