Convert //components/dom_distiller from scoped_ptr to std::unique_ptr

components/dom_distiller/ios/distiller_page_ios.mm

 // 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 "components/dom_distiller/ios/distiller_page_ios.h"
 
 #import <UIKit/UIKit.h>
 
 #include <utility>
 
@@ skipping 85 matching lines @@
   // Inject the script.
   base::WeakPtr<DistillerPageIOS> weak_this = weak_ptr_factory_.GetWeakPtr();
   provider_->InjectScript(script_, ^(NSString* string, NSError* error) {
     DistillerPageIOS* distiller_page = weak_this.get();
     if (distiller_page)
       distiller_page->HandleJavaScriptResultString(string);
   });
 }
 
 void DistillerPageIOS::HandleJavaScriptResultString(NSString* result) {
-  scoped_ptr<base::Value> resultValue = base::Value::CreateNullValue();
+  std::unique_ptr<base::Value> resultValue = base::Value::CreateNullValue();
   if (result.length) {
-    scoped_ptr<base::Value> dictionaryValue =
+    std::unique_ptr<base::Value> dictionaryValue =
         base::JSONReader::Read(base::SysNSStringToUTF8(result));
     if (dictionaryValue &&
         dictionaryValue->IsType(base::Value::TYPE_DICTIONARY)) {
       resultValue = std::move(dictionaryValue);
     }
   }
   OnDistillationDone(url_, resultValue.get());
 }
 
 }  // namespace dom_distiller