Fix bug where NVDA wouldn't enter browse mode on page load.

ui/accessibility/ax_tree.cc

Index: ui/accessibility/ax_tree.cc
diff --git a/ui/accessibility/ax_tree.cc b/ui/accessibility/ax_tree.cc
index c0ec9ac8c49f6f5c007872a042e374d47c0f85f1..359c8e2fe1d3f62a637a84fe11e0fe7b0e13640a 100644
--- a/ui/accessibility/ax_tree.cc
+++ b/ui/accessibility/ax_tree.cc
@@ -157,8 +157,6 @@ bool AXTree::UpdateNode(
   if (node) {
     update_state->pending_nodes.erase(node);
     node->SetData(src);
-    if (delegate_)
-      delegate_->OnNodeChanged(node);
   } else {
     if (src.role != AX_ROLE_ROOT_WEB_AREA) {
       error_ = base::StringPrintf(
@@ -171,6 +169,9 @@ bool AXTree::UpdateNode(
     node->SetData(src);
   }
 
+  if (delegate_)
+    delegate_->OnNodeChanged(node);
+
   // First, delete nodes that used to be children of this node but aren't
   // anymore.
   if (!DeleteOldChildren(node, src.child_ids)) {