Switch //components away from base::ListValue::Append(Value*) overload.

components/history/core/browser/web_history_service.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 "components/history/core/browser/web_history_service.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 286 matching lines @@
 
   if (!version_info.empty())
     url = net::AppendQueryParameter(url, "kvi", version_info);
 
   return url;
 }
 
 // Creates a DictionaryValue to hold the parameters for a deletion.
 // Ownership is passed to the caller.
 // |url| may be empty, indicating a time-range deletion.
-base::DictionaryValue* CreateDeletion(
+std::unique_ptr<base::DictionaryValue> CreateDeletion(
     const std::string& min_time,
     const std::string& max_time,
     const GURL& url) {
-  base::DictionaryValue* deletion = new base::DictionaryValue;
+  std::unique_ptr<base::DictionaryValue> deletion(new base::DictionaryValue);
   deletion->SetString("type", "CHROME_HISTORY");
   if (url.is_valid())
     deletion->SetString("url", url.spec());
   deletion->SetString("min_timestamp_usec", min_time);
   deletion->SetString("max_timestamp_usec", max_time);
   return deletion;
 }
 
 }  // namespace
 
@@ skipping 303 matching lines @@
   if (success && request->GetResponseCode() == net::HTTP_OK) {
     sync_pb::HistoryStatusResponse history_status;
     if (history_status.ParseFromString(request->GetResponseBody()))
       has_other_forms_of_browsing_history = history_status.has_derived_data();
   }
 
   callback.Run(has_other_forms_of_browsing_history);
 }
 
 }  // namespace history