Refactor BrowserAccessibility to prepare for AXNode (re-land)

content/browser/accessibility/browser_accessibility_manager_gtk.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/accessibility/browser_accessibility_manager_gtk.h"
 
 #include "content/browser/accessibility/browser_accessibility_gtk.h"
 #include "content/common/accessibility_messages.h"
 
 namespace content {
@@ skipping 50 matching lines @@
       g_signal_emit_by_name(atk_object, "focus-event", true);
       break;
     default:
       break;
   }
 }
 
 void BrowserAccessibilityManagerGtk::RecursivelySendChildrenChanged(
     BrowserAccessibilityGtk* node) {
   AtkObject* atkObject = node->ToBrowserAccessibilityGtk()->GetAtkObject();
-  for (unsigned int i = 0; i < node->children().size(); ++i) {
+  for (unsigned int i = 0; i < node->InternalChildCount(); ++i) {
     BrowserAccessibilityGtk* child =
-        node->children()[i]->ToBrowserAccessibilityGtk();
+        node->InternalGetChild(i)->ToBrowserAccessibilityGtk();
     g_signal_emit_by_name(atkObject,
                           "children-changed::add",
                           i,
                           child->GetAtkObject());
     RecursivelySendChildrenChanged(child);
   }
 }
 
 }  // namespace content