Convert //ash from scoped_ptr to std::unique_ptr

ash/keyboard/keyboard_ui.cc

 // Copyright 2016 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 "ash/keyboard/keyboard_ui.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/keyboard/keyboard_ui_observer.h"
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/system/tray_accessibility.h"
+#include "base/memory/ptr_util.h"
 #include "ui/keyboard/keyboard_controller.h"
 
 namespace ash {
 
 class KeyboardUIImpl : public KeyboardUI, public AccessibilityObserver {
  public:
   KeyboardUIImpl() {
     // The Shell may not exist in some unit tests.
     Shell::GetInstance()->system_tray_notifier()->AddAccessibilityObserver(
         this);
@@ skipping 22 matching lines @@
                       OnKeyboardEnabledStateChanged(IsEnabled()));
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(KeyboardUIImpl);
 };
 
 KeyboardUI::~KeyboardUI() {}
 
 // static
-scoped_ptr<KeyboardUI> KeyboardUI::Create() {
-  return make_scoped_ptr(new KeyboardUIImpl);
+std::unique_ptr<KeyboardUI> KeyboardUI::Create() {
+  return base::WrapUnique(new KeyboardUIImpl);
 }
 
 void KeyboardUI::AddObserver(KeyboardUIObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void KeyboardUI::RemoveObserver(KeyboardUIObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 KeyboardUI::KeyboardUI() {}
 
 }  // namespace ash