It is time.

ui/accessibility/platform/ax_platform_node_delegate.h

-// 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.
-
-#ifndef UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_
-#define UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_
-
-#include "ui/accessibility/ax_enums.h"
-#include "ui/accessibility/ax_export.h"
-#include "ui/gfx/geometry/vector2d.h"
-#include "ui/gfx/native_widget_types.h"
-
-namespace ui {
-
-struct AXNodeData;
-class AXPlatformNode;
-
-class AX_EXPORT AXPlatformNodeDelegate {
- public:
-  // Get the accessibility data that should be exposed for this node.
-  virtual AXNodeData* GetData() = 0;
-
-  // Get the parent of the node unless it's the root, then it returns NULL.
-  virtual gfx::NativeViewAccessible GetParent() = 0;
-
-  // Get the number of children of this node.
-  virtual int GetChildCount() = 0;
-
-  // Get the child of a node from [0...GetChildCount() - 1]
-  virtual gfx::NativeViewAccessible ChildAtIndex(int index) = 0;
-
-  // Get the offset to convert local coordinates to screen global coordinates.
-  virtual gfx::Vector2d GetGlobalCoordinateOffset() = 0;
-
-  //
-  // Events.
-  //
-  virtual void NotifyAccessibilityEvent(ui::AXEvent event_type) = 0;
-
-};
-
-}  // namespace ui
-
-#endif  // UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_