Rewrite simple uses of base::ListValue::Append() taking a raw pointer var.

chrome/browser/extensions/api/top_sites/top_sites_api.cc

 // Copyright (c) 2012 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 "chrome/browser/extensions/api/top_sites/top_sites_api.h"
 
 #include <stddef.h>
 
+#include <memory>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/values.h"
 #include "chrome/browser/history/top_sites_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
 #include "components/history/core/browser/top_sites.h"
 
 namespace extensions {
@@ skipping 14 matching lines @@
                  weak_ptr_factory_.GetWeakPtr()), false);
   return true;
 }
 
 void TopSitesGetFunction::OnMostVisitedURLsAvailable(
     const history::MostVisitedURLList& data) {
   std::unique_ptr<base::ListValue> pages_value(new base::ListValue);
   for (size_t i = 0; i < data.size(); i++) {
     const history::MostVisitedURL& url = data[i];
     if (!url.url.is_empty()) {
-      base::DictionaryValue* page_value = new base::DictionaryValue();
+      std::unique_ptr<base::DictionaryValue> page_value(
+          new base::DictionaryValue());
       page_value->SetString("url", url.url.spec());
       if (url.title.empty())
         page_value->SetString("title", url.url.spec());
       else
         page_value->SetString("title", url.title);
-      pages_value->Append(page_value);
+      pages_value->Append(std::move(page_value));
     }
   }
 
   SetResult(std::move(pages_value));
   SendResponse(true);
 }
 
 }  // namespace extensions