Views a11y: Convert View's NativeViewAccessibility to a unique_ptr.

ui/views/accessibility/native_view_accessibility_auralinux.cc

 // 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 <memory>
 #include <vector>
 
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
 #include "base/stl_util.h"
 #include "ui/accessibility/ax_action_data.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"
@@ skipping 122 matching lines @@
   ui::AXPlatformNode* platform_node_;
   ui::AXNodeData data_;
   std::vector<Widget*> widgets_;
 
   DISALLOW_COPY_AND_ASSIGN(AuraLinuxApplication);
 };
 
 }  // namespace
 
 // static
-NativeViewAccessibility* NativeViewAccessibility::Create(View* view) {
+std::unique_ptr<NativeViewAccessibility> NativeViewAccessibility::Create(
+    View* view) {
   AuraLinuxApplication::GetInstance()->RegisterWidget(view->GetWidget());
-  return new NativeViewAccessibilityAuraLinux(view);
+  return base::MakeUnique<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