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

components/devtools_http_handler/devtools_http_handler.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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <utility>
 
@@ skipping 869 matching lines @@
     int connection_id,
     const net::HttpServerRequestInfo& request) {
   if (!thread_)
     return;
   thread_->task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&ServerWrapper::AcceptWebSocket,
                  base::Unretained(server_wrapper_), connection_id, request));
 }
 
-base::DictionaryValue* DevToolsHttpHandler::SerializeDescriptor(
+std::unique_ptr<base::DictionaryValue> DevToolsHttpHandler::SerializeDescriptor(
     scoped_refptr<DevToolsAgentHost> agent_host,
     const std::string& host) {
-  base::DictionaryValue* dictionary = new base::DictionaryValue;
+  std::unique_ptr<base::DictionaryValue> dictionary(new base::DictionaryValue);
   std::string id = agent_host->GetId();
   dictionary->SetString(kTargetIdField, id);
   std::string parent_id = agent_host->GetParentId();
   if (!parent_id.empty())
     dictionary->SetString(kTargetParentIdField, parent_id);
   dictionary->SetString(kTargetTypeField, agent_host->GetType());
   dictionary->SetString(kTargetTitleField,
                         net::EscapeForHTML(agent_host->GetTitle()));
   dictionary->SetString(kTargetDescriptionField, agent_host->GetDescription());
 
@@ skipping 19 matching lines @@
         id.c_str(),
         host);
     dictionary->SetString(
         kTargetDevtoolsFrontendUrlField, devtools_frontend_url);
   }
 
   return dictionary;
 }
 
 }  // namespace devtools_http_handler