Revert "Enable chrome.automation.getDesktop on all aura platforms."

chrome/browser/ui/aura/accessibility/ax_tree_source_aura.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 CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_
-#define CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "chrome/browser/ui/aura/accessibility/ax_root_obj_wrapper.h"
-#include "ui/accessibility/ax_tree_source.h"
-
-namespace views {
-class AXAuraObjWrapper;
-}  // namespace views
-
-// This class exposes the views hierarchy as an accessibility tree permitting
-// use with other accessibility classes.
-class AXTreeSourceAura : public ui::AXTreeSource<views::AXAuraObjWrapper*> {
- public:
-  AXTreeSourceAura();
-  ~AXTreeSourceAura() override;
-
-  // A set of actions invoked on an Aura view.
-  void DoDefault(int32 id);
-  void Focus(int32 id);
-  void MakeVisible(int32 id);
-  void SetSelection(int32 id, int32 start, int32 end);
-
-  // AXTreeSource implementation.
-  views::AXAuraObjWrapper* GetRoot() const override;
-  views::AXAuraObjWrapper* GetFromId(int32 id) const override;
-  int32 GetId(views::AXAuraObjWrapper* node) const override;
-  void GetChildren(
-      views::AXAuraObjWrapper* node,
-      std::vector<views::AXAuraObjWrapper*>* out_children) const override;
-  views::AXAuraObjWrapper* GetParent(
-      views::AXAuraObjWrapper* node) const override;
-  bool IsValid(views::AXAuraObjWrapper* node) const override;
-  bool IsEqual(views::AXAuraObjWrapper* node1,
-               views::AXAuraObjWrapper* node2) const override;
-  views::AXAuraObjWrapper* GetNull() const override;
-  void SerializeNode(views::AXAuraObjWrapper* node,
-                     ui::AXNodeData* out_data) const override;
-
-  // Useful for debugging.
-  std::string ToString(views::AXAuraObjWrapper* root, std::string prefix);
-
- private:
-  scoped_ptr<AXRootObjWrapper> root_;
-
-  DISALLOW_COPY_AND_ASSIGN(AXTreeSourceAura);
-};
-
-#endif  // CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_