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

ios/public/provider/web/web_controller_provider.h

 // Copyright 2015 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_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_H_
 #define IOS_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_H_
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "ios/web/public/block_types.h"
 #include "ios/web/public/web_state/web_state_observer.h"
 #include "url/gurl.h"
 
 namespace web {
 class BrowserState;
 class WebState;
 }
 
 namespace ios {
@@ skipping 34 matching lines @@
                             web::JavaScriptCompletion completion);
 };
 
 class WebControllerProviderFactory {
  public:
   WebControllerProviderFactory();
   virtual ~WebControllerProviderFactory();
 
   // Vends WebControllerProviders created using |browser_state|, passing
   // ownership to callers.
-  virtual scoped_ptr<WebControllerProvider> CreateWebControllerProvider(
+  virtual std::unique_ptr<WebControllerProvider> CreateWebControllerProvider(
       web::BrowserState* browser_state);
 };
 
 }  // namespace ios
 
 #endif  // IOS_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_H_