Remove ListValue::Append(new {Fundamental,String}Value(...)) pattern in //extensions

extensions/browser/api/management/management_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 "extensions/browser/api/management/management_api.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 847 matching lines @@
 }
 
 void ManagementEventRouter::BroadcastEvent(
     const Extension* extension,
     events::HistogramValue histogram_value,
     const char* event_name) {
   if (extension->ShouldNotBeVisible())
     return;  // Don't dispatch events for built-in extenions.
   std::unique_ptr<base::ListValue> args(new base::ListValue());
   if (event_name == management::OnUninstalled::kEventName) {
-    args->Append(new base::StringValue(extension->id()));
+    args->AppendString(extension->id());
   } else {
     args->Append(CreateExtensionInfo(*extension, browser_context_).ToValue());
   }
 
   EventRouter::Get(browser_context_)
       ->BroadcastEvent(std::unique_ptr<Event>(
           new Event(histogram_value, event_name, std::move(args))));
 }
 
 ManagementAPI::ManagementAPI(content::BrowserContext* context)
@@ skipping 21 matching lines @@
 ManagementAPI::GetFactoryInstance() {
   return g_factory.Pointer();
 }
 
 void ManagementAPI::OnListenerAdded(const EventListenerInfo& details) {
   management_event_router_.reset(new ManagementEventRouter(browser_context_));
   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 }
 
 }  // namespace extensions