Replace scoped_ptr with std::unique_ptr in //ui

ui/aura/scoped_window_targeter.cc

 // 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.
 
 #include "ui/aura/scoped_window_targeter.h"
 
 #include <utility>
 
 #include "ui/aura/window.h"
 
 namespace aura {
 
 ScopedWindowTargeter::ScopedWindowTargeter(
     Window* window,
-    scoped_ptr<ui::EventTargeter> new_targeter)
+    std::unique_ptr<ui::EventTargeter> new_targeter)
     : window_(window),
       old_targeter_(window->SetEventTargeter(std::move(new_targeter))) {
   window_->AddObserver(this);
 }
 
 ScopedWindowTargeter::~ScopedWindowTargeter() {
   if (window_) {
     window_->RemoveObserver(this);
     window_->SetEventTargeter(std::move(old_targeter_));
   }
 }
 
 void ScopedWindowTargeter::OnWindowDestroyed(Window* window) {
   CHECK_EQ(window_, window);
   window_ = NULL;
   old_targeter_.reset();
 }
 
 }  // namespace aura