Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/cocoa/notifications/message_center_tray_bridge.h

 // Copyright (c) 2013 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_MESSAGE_CENTER_TRAY_BRIDGE_H_
 #define CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_MESSAGE_CENTER_TRAY_BRIDGE_H_
 
 #import <AppKit/AppKit.h>
 
+#include <memory>
+
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "components/prefs/pref_member.h"
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/message_center_tray_delegate.h"
 
 @class MCPopupCollection;
 
 namespace message_center {
 class MessageCenter;
 class MessageCenterTray;
@@ skipping 21 matching lines @@
 
   message_center::MessageCenter* message_center() { return message_center_; }
 
  private:
   friend class MessageCenterTrayBridgeTest;
 
   // The global, singleton message center model object. Weak.
   message_center::MessageCenter* message_center_;
 
   // C++ controller for the notification tray UI.
-  scoped_ptr<message_center::MessageCenterTray> tray_;
+  std::unique_ptr<message_center::MessageCenterTray> tray_;
 
   // Obj-C controller for the on-screen popup notifications.
   base::scoped_nsobject<MCPopupCollection> popup_collection_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterTrayBridge);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_MESSAGE_CENTER_TRAY_BRIDGE_H_