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

chrome/browser/ui/cocoa/handoff_active_url_observer_bridge.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_HANDOFF_ACTIVE_URL_OBSERVER_BRIDGE_H_
 #define CHROME_BROWSER_UI_COCOA_HANDOFF_ACTIVE_URL_OBSERVER_BRIDGE_H_
 
 #import <Cocoa/Cocoa.h>
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/cocoa/handoff_active_url_observer_delegate.h"
 
 namespace content {
 class WebContents;
 }
 
 class HandoffActiveURLObserver;
 
 // A protocol that allows ObjC objects to receive delegate callbacks from
 // HandoffActiveURLObserver.
@@ skipping 10 matching lines @@
 
   ~HandoffActiveURLObserverBridge() override;
 
  private:
   void HandoffActiveURLChanged(content::WebContents* web_contents) override;
 
   // Instances of this class should be owned by their |delegate_|.
   NSObject<HandoffActiveURLObserverBridgeDelegate>* delegate_;
 
   // The C++ object that this class acts as a bridge for.
-  scoped_ptr<HandoffActiveURLObserver> observer_;
+  std::unique_ptr<HandoffActiveURLObserver> observer_;
 
   DISALLOW_COPY_AND_ASSIGN(HandoffActiveURLObserverBridge);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_HANDOFF_ACTIVE_URL_OBSERVER_BRIDGE_H_