Convert //ash from scoped_ptr to std::unique_ptr

ash/shell/shell_delegate_impl.cc

 // Copyright (c) 2012 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/shell/shell_delegate_impl.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/default_accessibility_delegate.h"
 #include "ash/default_user_wallpaper_delegate.h"
 #include "ash/gpu_support_stub.h"
@@ skipping 111 matching lines @@
     return true;
   }
   void AddSessionStateObserver(ash::SessionStateObserver* observer) override {}
   void RemoveSessionStateObserver(
       ash::SessionStateObserver* observer) override {}
 
  private:
   bool screen_locked_;
 
   // A pseudo user info.
-  scoped_ptr<user_manager::UserInfo> user_info_;
+  std::unique_ptr<user_manager::UserInfo> user_info_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionStateDelegateImpl);
 };
 
 }  // namespace
 
 ShellDelegateImpl::ShellDelegateImpl() : shelf_delegate_(nullptr) {}
 
 ShellDelegateImpl::~ShellDelegateImpl() {}
 
@@ skipping 97 matching lines @@
 base::string16 ShellDelegateImpl::GetProductName() const {
   return base::string16();
 }
 
 gfx::Image ShellDelegateImpl::GetDeprecatedAcceleratorImage() const {
   return gfx::Image();
 }
 
 }  // namespace shell
 }  // namespace ash