Update browser cache of accessibility tree on renderer sub-tree changes....

chrome/browser/renderer_host/render_widget_host_view_win.cc

Index: chrome/browser/renderer_host/render_widget_host_view_win.cc
===================================================================
--- chrome/browser/renderer_host/render_widget_host_view_win.cc	(revision 57122)
+++ chrome/browser/renderer_host/render_widget_host_view_win.cc	(working copy)
@@ -1511,6 +1511,14 @@
   }
 }
 
+void RenderWidgetHostViewWin::OnAccessibilityObjectChildrenChange(
+    const std::vector<webkit_glue::WebAccessibility>& acc_changes) {
+  if (browser_accessibility_manager_.get()) {
+    browser_accessibility_manager_->OnAccessibilityObjectChildrenChange(
+        acc_changes);
+  }
+}
+
 void RenderWidgetHostViewWin::Observe(NotificationType type,
                                       const NotificationSource& source,
                                       const NotificationDetails& details) {
@@ -1553,6 +1561,10 @@
   render_widget_host_->AccessibilityDoDefaultAction(acc_obj_id);
 }
 
+void RenderWidgetHostViewWin::AccessibilityObjectChildrenChangeAck() {
+  render_widget_host_->AccessibilityObjectChildrenChangeAck();
+}
+
 LRESULT RenderWidgetHostViewWin::OnGetObject(UINT message, WPARAM wparam,
                                              LPARAM lparam, BOOL& handled) {
   if (lparam != OBJID_CLIENT) {