Updates table-like objects when cells are added or removed.

content/renderer/accessibility/render_accessibility_impl.cc

Index: content/renderer/accessibility/render_accessibility_impl.cc
diff --git a/content/renderer/accessibility/render_accessibility_impl.cc b/content/renderer/accessibility/render_accessibility_impl.cc
index 7c8f196d7866aa137f7459a1b48eb4c576934cf2..059bd19fbeb08a10e3fcd5acaa87d96eb2f05a3d 100644
--- a/content/renderer/accessibility/render_accessibility_impl.cc
+++ b/content/renderer/accessibility/render_accessibility_impl.cc
@@ -261,6 +261,17 @@ void RenderAccessibilityImpl::HandleAXEvent(
     serializer_.DeleteClientSubtree(obj);
 #endif
 
+  // If some cell IDs have been added or removed, we need to update the whole
+  // table.
+  if (obj.Role() == blink::kWebAXRoleRow &&
+      event == ui::AX_EVENT_CHILDREN_CHANGED) {
+    WebAXObject table_like_object = obj.ParentObject();
+    if (!table_like_object.IsDetached()) {
+      serializer_.DeleteClientSubtree(table_like_object);
+      HandleAXEvent(table_like_object, ui::AX_EVENT_CHILDREN_CHANGED);
+    }
+  }
+
   // Add the accessibility object to our cache and ensure it's valid.
   AccessibilityHostMsg_EventParams acc_event;
   acc_event.id = obj.AxID();