Revert of Implement NativeViewAccessibilityWin using AXPlatformNodeWin.

ui/accessibility/platform/test_ax_node_wrapper.h

-// Copyright 2015 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_TEST_AX_NODE_WRAPPER_H_
-#define UI_ACCESSIBILITY_PLATFORM_TEST_AX_NODE_WRAPPER_H_
-
-#include "ui/accessibility/ax_node.h"
-#include "ui/accessibility/ax_tree.h"
-#include "ui/accessibility/platform/ax_platform_node.h"
-#include "ui/accessibility/platform/ax_platform_node_delegate.h"
-
-namespace ui {
-
-// For testing, a TestAXNodeWrapper wraps an AXNode, implements
-// AXPlatformNodeDelegate, and owns an AXPlatformNode.
-class TestAXNodeWrapper : public AXPlatformNodeDelegate {
- public:
-  // Create TestAXNodeWrapper instances on-demand from an AXTree and AXNode.
-  // Note that this sets the AXTreeDelegate, you can't use this class if
-  // you also want to implement AXTreeDelegate.
-  static TestAXNodeWrapper* GetOrCreate(AXTree* tree, AXNode* node);
-
-  // Set a global coordinate offset for testing.
-  static void SetGlobalCoordinateOffset(const gfx::Vector2d& offset);
-
-  virtual ~TestAXNodeWrapper();
-
-  AXPlatformNode* ax_platform_node() { return platform_node_; }
-
-  // AXPlatformNodeDelegate.
-  const AXNodeData& GetData() override;
-  gfx::NativeViewAccessible GetParent() override;
-  int GetChildCount() override;
-  gfx::NativeViewAccessible ChildAtIndex(int index) override;
-  gfx::Vector2d GetGlobalCoordinateOffset() override;
-  gfx::NativeViewAccessible HitTestSync(int x, int y) override;
-  gfx::NativeViewAccessible GetFocus() override;
-  gfx::AcceleratedWidget GetTargetForNativeAccessibilityEvent() override;
-  void DoDefaultAction() override;
-  bool SetStringValue(const base::string16& new_value) override;
-
- private:
-  TestAXNodeWrapper(AXTree* tree, AXNode* node);
-
-  AXTree* tree_;
-  AXNode* node_;
-  AXPlatformNode* platform_node_;
-};
-
-}  // namespace ui
-
-#endif  // UI_ACCESSIBILITY_PLATFORM_TEST_AX_NODE_WRAPPER_H_