Extend AXTreeSourceViews to handle aura::Window and views::Widget.

chrome/browser/ui/views/accessibility/ax_root_obj_wrapper.cc

+// Copyright 2014 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 "chrome/browser/ui/views/accessibility/ax_root_obj_wrapper.h"
+
+#include "ash/shell.h"
+#include "ui/accessibility/ax_node_data.h"
+#include "ui/accessibility/ax_view_state.h"
+#include "ui/aura/window.h"
+#include "ui/views/accessibility/ax_aura_obj_cache.h"
+
+namespace views {
+
+bool AXRootObjWrapper::HasChild(AXAuraObjWrapper* child) {
+  std::vector<AXAuraObjWrapper*> out_children;
+  GetChildren(&out_children);
+  return std::find(out_children.begin(), out_children.end(), child) !=
+      out_children.end();
+}
+
+AXAuraObjWrapper* AXRootObjWrapper::GetParent() {
+  return NULL;
+}
+
+void AXRootObjWrapper::GetChildren(
+    std::vector<AXAuraObjWrapper*>* out_children) {
+  aura::Window::Windows children =
+      ash::Shell::GetInstance()->GetAllRootWindows();
+  for (size_t i = 0; i < children.size(); ++i) {
+    out_children->push_back(
+        AXAuraObjCache::GetInstance()->GetOrCreate(children[i]));
+  }
+}
+
+void AXRootObjWrapper::Serialize(ui::AXNodeData* out_node_data) {
+  out_node_data->id = id_;
+  out_node_data->state = 0;
+}
+
+int32 AXRootObjWrapper::GetID() {
+  return id_;
+}
+
+}  // namespace views