Revert of Resurrect Aura Linux accessibility.

ui/views/accessibility/native_view_accessibility_auralinux.cc

Index: ui/views/accessibility/native_view_accessibility_auralinux.cc
diff --git a/ui/views/accessibility/native_view_accessibility_auralinux.cc b/ui/views/accessibility/native_view_accessibility_auralinux.cc
deleted file mode 100644
index afee5352cd08068e26ab33d2a827ff6dbdbab564..0000000000000000000000000000000000000000
--- a/ui/views/accessibility/native_view_accessibility_auralinux.cc
+++ /dev/null
@@ -1,164 +0,0 @@
-// 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.
-
-#include "ui/views/accessibility/native_view_accessibility_auralinux.h"
-
-#include <algorithm>
-#include <vector>
-
-#include "base/memory/singleton.h"
-#include "ui/accessibility/ax_enums.h"
-#include "ui/accessibility/ax_node_data.h"
-#include "ui/accessibility/platform/ax_platform_node_auralinux.h"
-#include "ui/accessibility/platform/ax_platform_node_delegate.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/views/views_delegate.h"
-#include "ui/views/widget/widget.h"
-#include "ui/views/widget/widget_observer.h"
-
-namespace views {
-
-namespace {
-
-// ATK requires that we have a single root "application" object that's the
-// owner of all other windows. This is a simple class that implements the
-// AXPlatformNodeDelegate interface so we can create such an application
-// object. Every time we create an accessibility object for a View, we add its
-// top-level widget to a vector so we can return the list of all top-level
-// windows as children of this application object.
-class AuraLinuxApplication
-    : public ui::AXPlatformNodeDelegate,
-      public WidgetObserver {
- public:
-  // Get the single instance of this class.
-  static AuraLinuxApplication* GetInstance() {
-    return Singleton<AuraLinuxApplication>::get();
-  }
-
-  // Called every time we create a new accessibility on a View.
-  // Add the top-level widget to our registry so that we can enumerate all
-  // top-level widgets.
-  void RegisterWidget(Widget* widget) {
-    if (!widget)
-      return;
-
-    widget = widget->GetTopLevelWidget();
-    if (std::find(widgets_.begin(), widgets_.end(), widget) != widgets_.end())
-      return;
-
-    widgets_.push_back(widget);
-    widget->AddObserver(this);
-  }
-
-  gfx::NativeViewAccessible GetNativeViewAccessible() {
-    return platform_node_->GetNativeViewAccessible();
-  }
-
-  //
-  // WidgetObserver overrides.
-  //
-
-  void OnWidgetDestroying(Widget* widget) override {
-    auto iter = std::find(widgets_.begin(), widgets_.end(), widget);
-    if (iter != widgets_.end())
-      widgets_.erase(iter);
-  }
-
-  //
-  // ui::AXPlatformNodeDelegate overrides.
-  //
-
-  const ui::AXNodeData& GetData() override {
-    return data_;
-  }
-
-  gfx::NativeViewAccessible GetParent() override {
-    return nullptr;
-  }
-
-  int GetChildCount() override {
-    return static_cast<int>(widgets_.size());
-  }
-
-  gfx::NativeViewAccessible ChildAtIndex(int index) override {
-    if (index < 0 || index >= GetChildCount())
-      return nullptr;
-
-    Widget* widget = widgets_[index];
-    CHECK(widget);
-    return widget->GetRootView()->GetNativeViewAccessible();
-  }
-
-  gfx::Vector2d GetGlobalCoordinateOffset() override {
-    return gfx::Vector2d();
-  }
-
-  gfx::NativeViewAccessible HitTestSync(int x, int y) override {
-    return nullptr;
-  }
-
-  gfx::NativeViewAccessible GetFocus() override {
-    return nullptr;
-  }
-
-  gfx::AcceleratedWidget GetTargetForNativeAccessibilityEvent() override {
-    return gfx::kNullAcceleratedWidget;
-  }
-
-  void DoDefaultAction() override {
-  }
-
-  bool SetStringValue(const base::string16& new_value) override {
-    return false;
-  }
-
- private:
-  friend struct DefaultSingletonTraits<AuraLinuxApplication>;
-
-  AuraLinuxApplication()
-      : platform_node_(ui::AXPlatformNode::Create(this)) {
-    data_.role = ui::AX_ROLE_APPLICATION;
-    if (ViewsDelegate::views_delegate) {
-      data_.AddStringAttribute(
-          ui::AX_ATTR_NAME,
-          ViewsDelegate::views_delegate->GetApplicationName());
-    }
-    ui::AXPlatformNodeAuraLinux::SetApplication(platform_node_);
-  }
-
-  ~AuraLinuxApplication() override {
-    platform_node_->Destroy();
-    platform_node_ = nullptr;
-  }
-
-  ui::AXPlatformNode* platform_node_;
-  ui::AXNodeData data_;
-  std::vector<Widget*> widgets_;
-
-  DISALLOW_COPY_AND_ASSIGN(AuraLinuxApplication);
-};
-
-}  // namespace
-
-// static
-NativeViewAccessibility* NativeViewAccessibility::Create(View* view) {
-  AuraLinuxApplication::GetInstance()->RegisterWidget(view->GetWidget());
-  return new NativeViewAccessibilityAuraLinux(view);
-}
-
-NativeViewAccessibilityAuraLinux::NativeViewAccessibilityAuraLinux(View* view)
-    : NativeViewAccessibility(view) {
-}
-
-NativeViewAccessibilityAuraLinux::~NativeViewAccessibilityAuraLinux() {
-}
-
-gfx::NativeViewAccessible NativeViewAccessibilityAuraLinux::GetParent() {
-  gfx::NativeViewAccessible parent = NativeViewAccessibility::GetParent();
-  if (!parent)
-    parent = AuraLinuxApplication::GetInstance()->GetNativeViewAccessible();
-  return parent;
-}
-
-}  // namespace views