Replace scoped_ptr with std::unique_ptr in //ui

ui/views/mouse_watcher.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/views/mouse_watcher.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/event_types.h"
 #include "base/macros.h"
@@ skipping 65 matching lines @@
     }
   }
 
   void NotifyListener() {
     mouse_watcher_->NotifyListener();
     // WARNING: we've been deleted.
   }
 
  private:
   MouseWatcher* mouse_watcher_;
-  scoped_ptr<views::EventMonitor> event_monitor_;
+  std::unique_ptr<views::EventMonitor> event_monitor_;
 
   // A factory that is used to construct a delayed callback to the listener.
   base::WeakPtrFactory<Observer> notify_listener_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Observer);
 };
 
 MouseWatcherListener::~MouseWatcherListener() {
 }
 
@@ skipping 19 matching lines @@
 void MouseWatcher::Stop() {
   observer_.reset(NULL);
 }
 
 void MouseWatcher::NotifyListener() {
   observer_.reset(NULL);
   listener_->MouseMovedOutOfHost();
 }
 
 }  // namespace views