Convert //ios from scoped_ptr to std::unique_ptr.

ios/web/navigation/navigation_manager_impl.h

 // Copyright 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 IOS_WEB_NAVIGATION_NAVIGATION_MANAGER_IMPL_H_
 #define IOS_WEB_NAVIGATION_NAVIGATION_MANAGER_IMPL_H_
 
 #include <stddef.h>
 
+#include <memory>
 #include <vector>
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #import "ios/web/public/navigation_manager.h"
 #include "ui/base/page_transition_types.h"
 #include "url/gurl.h"
 
 @class CRWSessionController;
 @class CRWSessionEntry;
 
 namespace web {
 class BrowserState;
@@ skipping 88 matching lines @@
   bool CanGoBack() const override;
   bool CanGoForward() const override;
   void GoBack() override;
   void GoForward() override;
   void Reload(bool check_for_reposts) override;
 
   // Returns the current list of transient url rewriters, passing ownership to
   // the caller.
   // TODO(crbug.com/546197): remove once NavigationItem creation occurs in this
   // class.
-  scoped_ptr<std::vector<BrowserURLRewriter::URLRewriter>>
+  std::unique_ptr<std::vector<BrowserURLRewriter::URLRewriter>>
   GetTransientURLRewriters();
 
   // Called to reset the transient url rewriter list.
   void RemoveTransientURLRewriters();
 
   // Copy state from |navigation_manager|, including a copy of that object's
   // CRWSessionController.
   void CopyState(NavigationManagerImpl* navigation_manager);
 
  private:
   // The primary delegate for this manager.
   NavigationManagerDelegate* delegate_;
 
   // The BrowserState that is associated with this instance.
   BrowserState* browser_state_;
 
   // CRWSessionController that backs this instance.
   // TODO(stuartmorgan): Fold CRWSessionController into this class.
   base::scoped_nsobject<CRWSessionController> session_controller_;
 
   // Weak pointer to the facade delegate.
   NavigationManagerFacadeDelegate* facade_delegate_;
 
   // List of transient url rewriters added by |AddTransientURLRewriter()|.
-  scoped_ptr<std::vector<BrowserURLRewriter::URLRewriter>>
+  std::unique_ptr<std::vector<BrowserURLRewriter::URLRewriter>>
       transient_url_rewriters_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationManagerImpl);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_NAVIGATION_NAVIGATION_MANAGER_IMPL_H_